K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

8 tháng 12 2021

It is said that The Po Nagar Cham Towers were built on the site of an earlier wooden temple,which was burned by the Javanese in A.D.774.

is said to have been built on the site of an earlier wooden temple,which was burned by the Javanese in A.D.774.

is thought that he works 16 hours a day

is thought to work 16 hours a day

8 tháng 12 2021

1. It is believed that the Po Nagra Cham Towers were built on the site of an earlier wooden temple, which was burned by the Javanese in A.D.774.

The Po Nagar Cham Towers were built on the site of an earlier wooden temple, which was burned by the Javanese in A.D. 774.

2. It is believed that he worked 16 hours a day.

He is said to be worked for 16 hours a day.

22 tháng 11 2020

Make all the changes and additions necessary to produce from the following sets of words and phrases, complete sentences.

1) The site of Po Nagar Cham Towers was first used for workship as early as the 2nd century AD.(think)

-> It is thought that the site of Po Nagar Cham Towers was first used for worship as early as the 2nd century AD.

2) The original wooden structure was destroyed by the Javanese in AD 774.(believe)

-> It is believed that the original wooden structure was destroyed by the Javanese in AD 774.

3) It was replaced by a stone-and-brick temple in 784.(say)

-> It is said that it was replaced by a stone-and-brick temple in 784.

4) Yang Ino Po Nagar ruled over the southern part of the Cham kingdom. (consider)

-> It is considered that Yang Ino Po Nagar ruled over the southern part of the Cham kingdom.

Give the correct form of the verbs.1.      Mary suggested _______ (visit) Po Nagar Cham Towers after lunch.2.      . He suggested ________ (go) to the cinema that night.3.       My father suggested that I _________ (not/borrow) money from friends.4.      . I suggested_________ (watch) her performance again.5.      . I wish my father (be) _________a doctor.6.      . Lan wishes she (live) _______ in a big city.7.      . She wishes she (not have) ____________to look after the children every...
Đọc tiếp

Give the correct form of the verbs.

1.      Mary suggested _______ (visit) Po Nagar Cham Towers after lunch.

2.      . He suggested ________ (go) to the cinema that night.

3.       My father suggested that I _________ (not/borrow) money from friends.

4.      . I suggested_________ (watch) her performance again.

5.      . I wish my father (be) _________a doctor.

6.      . Lan wishes she (live) _______ in a big city.

7.      . She wishes she (not have) ____________to look after the children every day.

8.      . The students wish they (visit) __________Ha Long Bay next summer.

9.      . He wishes he (have) ___________a lot of money.

10.   I wish my friends (attend) __________my party three days ago.

11.   I wish I (know) ________her address.

12.  . The boy wishes he (be) _____________ a doctor when he grows up.

13.  . Maryam wishes she (visit) _________my country again someday.

14.   My sister wishes she ( not come) _______to the fair last night.

15.  It (know) ___________ that he is the famous person.

2
7 tháng 11 2021

1.      Mary suggested _____visiting__ (visit) Po Nagar Cham Towers after lunch.

2.      . He suggested ___going_____ (go) to the cinema that night.

3.       My father suggested that I _shouldn't borrow________ (not/borrow) money from friends.

4.      . I suggested____watching_____ (watch) her performance again.

5.      . I wish my father (be) __were_______a doctor.

6.      . Lan wishes she (live) ___lived____ in a big city.

7.      . She wishes she (not have) ___didn't have_________to look after the children every day.

8.      . The students wish they (visit) ___would visit_______Ha Long Bay next summer.

9.      . He wishes he (have) _______had____a lot of money.

10.   I wish my friends (attend) ___had attended_______my party three days ago.

11.   I wish I (know) knew________her address.

12.  . The boy wishes he (be) ___would be__________ a doctor when he grows up.

13.  . Maryam wishes she (visit) ___would visit______my country again someday.

14.   My sister wishes she ( not come) ___hadn't come____to the fair last night.

15.  It (know) ____is known_______ that he is the famous person.

24 tháng 12 2021

1. Mary suggested visiting (visit) Po Nagar Cham Towers after lunch.

2. He suggested going (go) to the cinema that night.

3. My father suggested that I shouldn't borrow (not/borrow) money from friends.

4. I suggested watching (watch) her performance again.

5. I wish my father (be) were a doctor.

6. Lan wishes she (live) lived in a big city.

7. She wishes she (not have) didn't have to look after the children every day.

8. The students wish they (visit) would visit Ha Long Bay next summer.

9. He wishes he (have) had a lot of money.

10. I wish my friends (attend) had attended my party three days ago.

11. I wish I (know) knew her address.

12. The boy wishes he (be) would be a doctor when he grows up.

13. Maryam wishes she (visit) would visit my country again someday.

14. My sister wishes she ( not come) hadn't come to the fair last night.

15. It (know) is known that he is the famous person.

Giup voi a Read the text on the tight about the invention of semaphore. Five sentences have been removed. Choose from sentences A-F the one which fits each gap (l-4).There is one extra sentence which you do not need. There is an example at the beginning (0). A Using ropes, these could be moved to form 49 different shapes that could be recognized easily. B The main problem was that it could not be used during the night or on foggy days. C These messages could be sent very quickly. D The new...
Đọc tiếp

Giup voi a

Read the text on the tight about the invention of semaphore. Five sentences have been removed. Choose from sentences A-F the one which fits each gap (l-4).There is one extra sentence which you do not need. There is an example at the beginning (0).

A Using ropes, these could be moved to form 49 different shapes that could be recognized easily.

B The main problem was that it could not be used during the night or on foggy days.

C These messages could be sent very quickly.

D The new republic faced enemies on all sides in the form of the forces of Britain, Austria, Holland, Prussia and Spain.

E In August 1794, it carried its first message, the news of Napoleon's victory at Le Quenoy.

F A system was built between London and the south coast, and other countries followed.

War has been called 'the mother of invention', and this was certainly true in the French Revolutionary wars in 1792. 1 | D | What the Revolutionary Government urgently needed was a reliable system of communication.

Claude Chappe, who was a priest and an engineer, had developed a telegraph system, but had not been able to test it fully. However, his brother Ignace was a member of the government, and arranged for Claude's system to be tested. It turned out to be a great success and started a new form of high-speed communication.

The two brothers had a series of towers built 5 to 10 km apart. At the top of each tower was a tall wooden mast, and they attached one horizontal and two vertical wooden beams to this mast. Claude called this system 'semaphore', which comes from the Greek meaning 'bearing a sign'. 2 ( )

Operators in each tower watched neighbouring towers through a telescope and then passed the message on to the next one in the line. The first line stretched from Paris to Lille, a distance of 2.40 km. 3 ( ). At an average speed of three signals a minute, it was carried in 20 minutes, more than 90 times faster than messengers on horseback.

Once the value of Chappe's system was understood, it soon became the standard method of communication in Europe. 4 ( ). By the time the electric telegraph was developed, France had more than 550 semaphore towers stretching 4,800km.

Unfortunately, Chappe's system had some disadvantages. 5 ( ) The towers were also expensive to maintain and the cost of staff was high. In the end, Chappe was depressed by these criticisms of his inventions and by claims from other engineers that they had invented semaphore, and he committed suicide in 1805.

1
16 tháng 7 2018

Giup voi a

Read the text on the tight about the invention of semaphore. Five sentences have been removed. Choose from sentences A-F the one which fits each gap (l-4).There is one extra sentence which you do not need. There is an example at the beginning (0).

A Using ropes, these could be moved to form 49 different shapes that could be recognized easily.

B The main problem was that it could not be used during the night or on foggy days.

C These messages could be sent very quickly.

D The new republic faced enemies on all sides in the form of the forces of Britain, Austria, Holland, Prussia and Spain.

E In August 1794, it carried its first message, the news of Napoleon's victory at Le Quenoy.

F A system was built between London and the south coast, and other countries followed.

War has been called 'the mother of invention', and this was certainly true in the French Revolutionary wars in 1792. 1 | D | What the Revolutionary Government urgently needed was a reliable system of communication.

Claude Chappe, who was a priest and an engineer, had developed a telegraph system, but had not been able to test it fully. However, his brother Ignace was a member of the government, and arranged for Claude's system to be tested. It turned out to be a great success and started a new form of high-speed communication.

The two brothers had a series of towers built 5 to 10 km apart. At the top of each tower was a tall wooden mast, and they attached one horizontal and two vertical wooden beams to this mast. Claude called this system 'semaphore', which comes from the Greek meaning 'bearing a sign'. 2 (A )

Operators in each tower watched neighbouring towers through a telescope and then passed the message on to the next one in the line. The first line stretched from Paris to Lille, a distance of 2.40 km. 3 ( C). At an average speed of three signals a minute, it was carried in 20 minutes, more than 90 times faster than messengers on horseback.

Once the value of Chappe's system was understood, it soon became the standard method of communication in Europe. 4 (F ). By the time the electric telegraph was developed, France had more than 550 semaphore towers stretching 4,800km.

Unfortunately, Chappe's system had some disadvantages. 5 ( B) The towers were also expensive to maintain and the cost of staff was high. In the end, Chappe was depressed by these criticisms of his inventions and by claims from other engineers that they had invented semaphore, and he committed suicide in 1805.

Giúp mình vs ạ! Read the text on the tight about the invention of semaphore. Five sentences have been removed. Choose from sentences A-F the one which fits each gap (l-4).There is one extra sentence which you do not need. There is an example at the beginning (0). A Using ropes, these could be moved to form 49 different shapes that could be recognized easily. B The main problem was that it could not be used during the night or on foggy days. C These messages could be sent very quickly. D...
Đọc tiếp

Giúp mình vs ạ!

Read the text on the tight about the invention of semaphore. Five sentences have been removed. Choose from sentences A-F the one which fits each gap (l-4).There is one extra sentence which you do not need. There is an example at the beginning (0).

A Using ropes, these could be moved to form 49 different shapes that could be recognized easily.

B The main problem was that it could not be used during the night or on foggy days.

C These messages could be sent very quickly.

D The new republic faced enemies on all sides in the form of the forces of Britain, Austria, Holland, Prussia and Spain.

E In August 1794, it carried its first message, the news of Napoleon's victory at Le Quenoy.

F A system was built between London and the south coast, and other countries followed.

War has been called 'the mother of invention', and this was certainly true in the French Revolutionary wars in 1792. 1 | D | What the Revolutionary Government urgently needed was a reliable system of communication.

Claude Chappe, who was a priest and an engineer, had developed a telegraph system, but had not been able to test it fully. However, his brother Ignace was a member of the government, and arranged for Claude's system to be tested. It turned out to be a great success and started a new form of high-speed communication.

The two brothers had a series of towers built 5 to 10 km apart. At the top of each tower was a tall wooden mast, and they attached one horizontal and two vertical wooden beams to this mast. Claude called this system 'semaphore', which comes from the Greek meaning 'bearing a sign'. 2 ( )

Operators in each tower watched neighbouring towers through a telescope and then passed the message on to the next one in the line. The first line stretched from Paris to Lille, a distance of 2.40 km. 3 ( ). At an average speed of three signals a minute, it was carried in 20 minutes, more than 90 times faster than messengers on horseback.

Once the value of Chappe's system was understood, it soon became the standard method of communication in Europe. 4 ( ). By the time the electric telegraph was developed, France had more than 550 semaphore towers stretching 4,800km.

Unfortunately, Chappe's system had some disadvantages. 5 ( ) The towers were also expensive to maintain and the cost of staff was high. In the end, Chappe was depressed by these criticisms of his inventions and by claims from other engineers that they had invented semaphore, and he committed suicide in 1805.

1
16 tháng 7 2018

Read the text on the tight about the invention of semaphore. Five sentences have been removed. Choose from sentences A-F the one which fits each gap (l-4).There is one extra sentence which you do not need. There is an example at the beginning (0).

A Using ropes, these could be moved to form 49 different shapes that could be recognized easily.

B The main problem was that it could not be used during the night or on foggy days.

C These messages could be sent very quickly.

D The new republic faced enemies on all sides in the form of the forces of Britain, Austria, Holland, Prussia and Spain.

E In August 1794, it carried its first message, the news of Napoleon's victory at Le Quenoy.

F A system was built between London and the south coast, and other countries followed.

War has been called 'the mother of invention', and this was certainly true in the French Revolutionary wars in 1792. 1 | D | What the Revolutionary Government urgently needed was a reliable system of communication.

Claude Chappe, who was a priest and an engineer, had developed a telegraph system, but had not been able to test it fully. However, his brother Ignace was a member of the government, and arranged for Claude's system to be tested. It turned out to be a great success and started a new form of high-speed communication.

The two brothers had a series of towers built 5 to 10 km apart. At the top of each tower was a tall wooden mast, and they attached one horizontal and two vertical wooden beams to this mast. Claude called this system 'semaphore', which comes from the Greek meaning 'bearing a sign'. 2 (A )

Operators in each tower watched neighbouring towers through a telescope and then passed the message on to the next one in the line. The first line stretched from Paris to Lille, a distance of 2.40 km. 3 ( C). At an average speed of three signals a minute, it was carried in 20 minutes, more than 90 times faster than messengers on horseback.

Once the value of Chappe's system was understood, it soon became the standard method of communication in Europe. 4 (F ). By the time the electric telegraph was developed, France had more than 550 semaphore towers stretching 4,800km.

Unfortunately, Chappe's system had some disadvantages. 5 (B ) The towers were also expensive to maintain and the cost of staff was high. In the end, Chappe was depressed by these criticisms of his inventions and by claims from other engineers that they had invented semaphore, and he committed suicide in 1805.

22 tháng 2 2022

1. They say that the visitors were killed by the terrorists.

->  The visitors are said to have been killed by the terrorists.

-> It is said  that the visitors were killed by the terrorists.

2. Many people think Steve stole the money.

-> Steve is thought to have stolen the money

-> It is thought that Steve stole the money.

3 People believed he won a lot of money on the lottery.

-> He was believed to have won a lot of money on the lottery

-> It was believed that he won a lot of money on the lottery.

4. people say that she passed the exam 

-> She is said to have passed the exam

-> It is said  that she passed the exam 

5. It was believed that Anna was leaving the town 

-> Anna was believed to have been leaving the town

 

22 tháng 2 2022

e cảm ơn ạ

 

Giup minh vs nha!! One day in 1963, a dolphin named Elvar and a famous astronomer, Carl Sagan, were playing a little game. The astronomer was visiting an institute which was looking into the way dolphins communicate with each other. He was standing at the edge of one of tanks where several of these highly intelligent, friendly creatures were kept. Elvar had just swum up alongside him and had turned on his back. He wanted Sagan to scratch his stomach again, as the astronomer had done twice...
Đọc tiếp

Giup minh vs nha!!

One day in 1963, a dolphin named Elvar and a famous astronomer, Carl Sagan, were playing a little game. The astronomer was visiting an institute which was looking into the way dolphins communicate with each other. He was standing at the edge of one of tanks where several of these highly intelligent, friendly creatures were kept. Elvar had just swum up alongside him and had turned on his back. He wanted Sagan to scratch his stomach again, as the astronomer had done twice before. But this time Elvar was too deep in the water for Sagan to reach him. Elvar looked up at Sagan, waiting. Then, after a minute or so, the dolphin leapt up through the water into the air and made a sound just like the words "More!"

The astonished astronomer went to the director of the institute and told him about the incident.

"Oh, yes. That´s one of the words he knows," the director said, showing no surprise at all.

Dolphins have bigger brains in proportion to their body size than humans have, and it has been known for a long time that they can make a number of sounds. What is more, these sounds seem to have different functions, such as warning each other of danger. Sound travels much faster and further in water than it does in air. That is why the parts of the brain that deal with sound are much better developed in dolphins than in humans. But can it be said that dolphins have a "language", in the real sense of the word? Scientist don´t agree on this.

1/ The dolphin leapt into the air because

A. Sagan was too near the water

B. it was part of the game they were playing.

C. he wanted Sagan to scratch him again

D. Sagan wanted to communicate with him

2/ "Dolphins" brains are particularly well developed to

A. help them to travle fast in water

B. arrange sounds in different structures

C. respond to different kinds of sound

D. communicate with humans through sound

Read the text on the tight about the invention of semaphore. Five sentences have been removed. Choose from sentences A-F the one which fits each gap (l-4).There is one extra sentence which you do not need. There is an example at the beginning (0).

A Using ropes, these could be moved to form 49 different shapes that could be recognized easily.

B The main problem was that it could not be used during the night or on foggy days.

C These messages could be sent very quickly.

D The new republic faced enemies on all sides in the form of the forces of Britain, Austria, Holland, Prussia and Spain.

E In August 1794, it carried its first message, the news of Napoleon's victory at Le Quenoy.

F A system was built between London and the south coast, and other countries followed.

War has been called 'the mother of invention', and this was certainly true in the French Revolutionary wars in 1792. 1 | D | What the Revolutionary Government urgently needed was a reliable system of communication.

Claude Chappe, who was a priest and an engineer, had developed a telegraph system, but had not been able to test it fully. However, his brother Ignace was a member of the government, and arranged for Claude's system to be tested. It turned out to be a great success and started a new form of high-speed communication.

The two brothers had a series of towers built 5 to 10 km apart. At the top of each tower was a tall wooden mast, and they attached one horizontal and two vertical wooden beams to this mast. Claude called this system 'semaphore', which comes from the Greek meaning 'bearing a sign'. 2 ( )

Operators in each tower watched neighbouring towers through a telescope and then passed the message on to the next one in the line. The first line stretched from Paris to Lille, a distance of 2.40 km. 3 ( ). At an average speed of three signals a minute, it was carried in 20 minutes, more than 90 times faster than messengers on horseback.

Once the value of Chappe's system was understood, it soon became the standard method of communication in Europe. 4 ( ). By the time the electric telegraph was developed, France had more than 550 semaphore towers stretching 4,800km.

Unfortunately, Chappe's system had some disadvantages. 5 ( ) The towers were also expensive to maintain and the cost of staff was high. In the end, Chappe was depressed by these criticisms of his inventions and by claims from other engineers that they had invented semaphore, and he committed suicide in 1805.

1
14 tháng 7 2018

One day in 1963, a dolphin named Elvar and a famous astronomer, Carl Sagan, were playing a little game. The astronomer was visiting an institute which was looking into the way dolphins communicate with each other. He was standing at the edge of one of tanks where several of these highly intelligent, friendly creatures were kept. Elvar had just swum up alongside him and had turned on his back. He wanted Sagan to scratch his stomach again, as the astronomer had done twice before. But this time Elvar was too deep in the water for Sagan to reach him. Elvar looked up at Sagan, waiting. Then, after a minute or so, the dolphin leapt up through the water into the air and made a sound just like the words "More!"

The astonished astronomer went to the director of the institute and told him about the incident.

"Oh, yes. That´s one of the words he knows," the director said, showing no surprise at all.

Dolphins have bigger brains in proportion to their body size than humans have, and it has been known for a long time that they can make a number of sounds. What is more, these sounds seem to have different functions, such as warning each other of danger. Sound travels much faster and further in water than it does in air. That is why the parts of the brain that deal with sound are much better developed in dolphins than in humans. But can it be said that dolphins have a "language", in the real sense of the word? Scientist don´t agree on this.

1/ The dolphin leapt into the air because

A. Sagan was too near the water

B. it was part of the game they were playing.

C. he wanted Sagan to scratch him again

D. Sagan wanted to communicate with him

2/ "Dolphins" brains are particularly well developed to

A. help them to travle fast in water

B. arrange sounds in different structures

C. respond to different kinds of sound

D. communicate with humans through sound

People say that the late Mr. Johnson was difficult to work with. It ………………………………………………………………. The late Mr. Johnson …………………………………………..People say that he works 16 hours a day. It ………………………………………………………………. He ……………………………………………………………..People thought Mike had paid too much. It ……………………………………………………………….Mike ………………………………………………...…………The police believe that a professional thief stole the statue. A professional thief …………………………………………….The statue ………………………………………………………People say that they bought this shop...
Đọc tiếp

People say that the late Mr. Johnson was difficult to work with.
 It ……………………………………………………………….
 The late Mr. Johnson …………………………………………..
People say that he works 16 hours a day.
 It ……………………………………………………………….
 He ……………………………………………………………..
People thought Mike had paid too much.
 It ……………………………………………………………….
Mike ………………………………………………...…………
The police believe that a professional thief stole the statue.
 A professional thief …………………………………………….
The statue ………………………………………………………
People say that they bought this shop last year.
They …………………………………………………………..
People believe that he drove through the town at 90 km an hour
 He ……………………………………………………………

1
23 tháng 10 2021

đề đây ạ

Exercise 2: Rewrite the following sentences in passive form.

1. If children don’t play sports, they weak and tired. A. feel B. will feel C. felt D. would feel 2. We haven’t got homework this weekend. A. some B.any C.a D.the 3. He asked her to marry him but she . A. carry him out B. turned him down C. took him out D. let him in 4. He wondered to tell the news to his parents. A. why B.what C. how D. which 5. When he was about your age, he walk 5 kilometers to school every morning. A. use to B. used to C. be used to D. used 6. What a nice day! I...
Đọc tiếp

1. If children don’t play sports, they weak and tired.

A. feel B. will feel C. felt D. would feel

2. We haven’t got homework this weekend.

A. some B.any C.a D.the

3. He asked her to marry him but she .

A. carry him out B. turned him down C. took him out D. let him in

4. He wondered to tell the news to his parents.

A. why B.what C. how D. which

5. When he was about your age, he walk 5 kilometers to school every morning.

A. use to B. used to C. be used to D. used

6. What a nice day! I wish I in the park now

A. walk B.could walk C. will walk D. have walked

7. Studies show that having good conflict skills is associated with various positive outcomes.

A. resolutional B. resolving C. resolve D. resolution

9. all our efforts to save the school, the authorities decided to close it.

A. since B. despite C. although D.because

10. My parents always criticize me for not getting good grades at school. I wish they could put themselves in my .

A. pants B. legs C. hands D. shoes

11. “ In the past, marriages used to be arranged by parents.”

“ “

A. Sure. That’s right. B. I suppose it was.

C. Really? I can’t imagine that D. That’s cool!

12. The weather was in England than in Spain last week.

A. most warmer B. much warmer C. by far warmer D. more warmer

13. I suggest you Ha Long Bay. It’s very picturesque.

A. to visit B. visiting C. visited D. should visit

14. It that Po Nagar Cham Towers were built in the 8th century.

A. considered B. was considered C. has considered D. considers

15. Choose the word which has a different stress pattern from the others.

A. include B. combine C. remind D. reduce

1
31 tháng 3 2020

1. If children don’t play sports, they weak and tired.

A. feel B. will feel C. felt D. would feel

2. We haven’t got homework this weekend.

A. some B.any C.a D.the

3. He asked her to marry him but she.

A. carry him out B. turned him down C. took him out D. let him in

4. He wondered to tell the news to his parents.

A. why B.what C. how D. which

5. When he was about your age, he walk 5 kilometers to school every morning.

A. use to B. used to C. be used to D. used

6. What a nice day! I wish I in the park now

A. walk B.could walk C. will walk D. have walked

7. Studies show that having good conflict skills is associated with various positive outcomes.

A. resolution B. resolving C. resolve D. resolution

9. all our efforts to save the school, the authorities decided to close it.

A. since B. despite C. although D.because

10. My parents always criticize me for not getting good grades at school. I wish they could put themselves in my.

A. pants B. legs C. hands D. shoes

11. “ In the past, marriages used to be arranged by parents.”

“ “

A. Sure. That’s right. B. I suppose it was.

C. Really? I can’t imagine that D. That’s cool!

12. The weather was in England than in Spain last week.

A. most warmer B. much warmer C. by far warmer D. more warmer

13. I suggest you Ha Long Bay. It’s very picturesque.

A. to visit B. visiting C. visited D. should visit

14. Is that Po Nagar Cham Towers was built in the 8th century.

A. considered B. was considered C. has considered D. considers

15. Choose the word which has a different stress pattern from the others.

A. include B. combine C. remind D. reduce

Tìm lỗi sai trong bài văn sau :(1) Professor Sanchez gave a lecture on transistors last Tuesday. (2) First, he explained what are transistors. (3) He said, that they are very small electronic devices used in telephones, automobiles, radios, and so on. (4) He further explained that transistors control the flow of electric current in electronic equipment. (5) He wanted to know which popular technological invention cannot operate without transistors. (6) Most students agreed, it is the...
Đọc tiếp

Tìm lỗi sai trong bài văn sau :
(1) Professor Sanchez gave a lecture on transistors last Tuesday. (2) First, he explained what are transistors. (3) He said, that they are very small electronic devices used in telephones, automobiles, radios, and so on. (4) He further explained that transistors control the flow of electric current in electronic equipment. (5) He wanted to know which popular technological invention cannot operate without transistors. (6) Most students agreed, it is the personal computer. (7) Professor Sanchez then asked if the students know how do transistors function in computers. (8) He said that the transistors were etched into tiny silicon microchips and that these transistors increase computers' speed and data storage capacity. (9) Then he asked the class when had transistors been invented? (10) Sergei guessed that they were invented in 1947. (11) The professor said that he is correct. (12) Professor Sanchez then asked what was the importance of this invention? (13) Many students answered that it is the beginning of the information age. (14) At the end of the lecture, the professor assigned a paper on transistors. (15) He requested that each student chooses a topic by next Monday. (16) He suggested that the papers are typed. 

e.g: 1. True 
2. "what are transistors" → what transistors are were 

1
11 tháng 9 2020

in sentence 2 there are 2 mistakes: incorrect word order and sequence of tense rule not followed.

Incorrect: First, he explained what are transistors.

Correct:  First, he explained what transistors were.

In sentence 3 there are 2 mistakes: incorrect punctuation and sequence of tense rule not followed

Incorrect: He said, that they are very small electronic devices used in telephone, automobiles, radios, and so on.

Correct:  He said that they were very small electronic devices used in telephone, automobiles, radios, and so on.

In sentence 4 there is one mistake: sequence of tense rule not followed.

Incorrect: He further explained that transistors control the flow of electric current in electronic equipment.

Correct:  He further explained that transistors controlled the flow of electric current in electronic equipment.

In sentence 5 there is one mistake: sequence of tense rule not followed.

Incorrect: He wanted to know which popular technological invention cannot operate without transistors.

Correct:  He wanted to know which popular technological invention could not operate without transistors.

In sentence 6 there are 3 mistakes: incorrect punctuation, sequence of tense rule not followed, and omitted subordinator that.

Incorrect: Most students agreed, it is the personal computer.

Correct:  Most students agreed that it was the personal computer.

In sentence 7 there are 3 mistakes: 2 times sequence of tense rule not followed and incorrect word order.

Incorrect: Professor Sanchez then asked if the students know how do transistors function in computers.

Correct:  Professor Sanchez then asked if the students knew how transistors functioned in computers.

In sentence 8 there is one mistake: sequence of tense rule not followed.

Incorrect: He said that the transistors were etched into tiny silicon microchips and that these transistors increase computers' speed and data storage capacity.

Correct:  He said that the transistors  were etched into tiny silicon microchips and that these transistors increased computers' speed and data storage capacity.

In sentence 9 there are 2 mistakes: incorrect word order and incorrect punctuation.

Incorrect: Then he asked the class when had transistors been invented?

Correct:  Then he asked the class when transistors had been invented.

In sentence 11 there is one mistake: sequence of tense rule not followed.

Incorrect: The professor said that he is correct.

Correct:  The professor said that he was correct.

In sentence 12 there are 2 mistakes: incorrect word order and incorrect punctuation.

Incorrect: Professor Sanchez then asked what was the importance of this invention?

Correct:  Professor Sanchez then asked what the importance of this invention was.

In sentence 13 there is one mistake: sequence of tense rule not followed.

Incorrect: Many students answered that it is the beginning of the information age.

Correct:  Many students answered that it was the beginning of the information age.

In sentence 15 there is one mistake: subjunctive verb not used.

Incorrect: He requested that each student chooses a topic by next Monday.

Correct:  He requested that each student choose a topic by next Monday.

In sentence 16 there is one mistake: subjunctive verb not used.

Incorrect: He suggested that the papers are typed.

Correct:  He suggested that the papers be typed.