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Tự vẽ hình nha.
c. Ta có: \(\left\{{}\begin{matrix}\widehat{BFA}=\widehat{FIA}+\widehat{IAF}\\\widehat{FAB}=\widehat{MAB}+\widehat{FAM}\end{matrix}\right.\)
Mà \(\widehat{FIA}=\widehat{MAB}\) (Cùng phụ \(\widehat{ABI}\) )
Và \(\widehat{IAF}=\widehat{FAM}\) (gt)
\(\Rightarrow\widehat{BFA}=\widehat{FAB}\) Hay \(\Delta ABF\) cân tại B.
Mà \(BE\perp AF\) ( \(\widehat{AEB}=90^0\) )
Nên \(AE=EF\) (1)
Ta lại có: \(\left\{{}\begin{matrix}HK\perp AE\\\widehat{HAE}=\widehat{KAE}\end{matrix}\right.\) Suy ra \(\Delta AHK\) là tg cân.
\(\Rightarrow HE=EK\) (2)
Từ (1)(2)suy ra \(AHFK\) là hình bình hành.
\(\Rightarrow FK//IA\)
Hay \(AIFK\:\) là hình thang. Để AIFK nội tiếp được đường tròn thì \(\widehat{BIA}=\widehat{IAM}\) \(\Rightarrow\widehat{BIA}=\widehat{ABI}\) \(\Rightarrow\widehat{MBA}=\widehat{MAB}=45^0\)
Hay M là điểm chính giữa cung AB./.
Có gì không hiểu cứ hỏi mình nha. !
Exercise 4 :
2, When I slow, I will late for the flight.
Rewrite the sentences so that they are nearest in meaning to the sentence printed before them .
1. Try hard and you can pass the examination.
-> If ........you Try hard, you can pass the examination..................................................................
2. The teacher said:" Don't talk in class"
-> The teacher ordered us..............not to talk in class....................................
3. Mrs Huong said" chanh quan ! Why do you go to school late?"
->Mrs Hương asked ...............chanh quan why he went to school late.................................
4. Tuong son said ," The sun rises in the East."
-> Tuong son said............the sun rises in the East.....................................
5. Does your brother use the Internet every day ?
-> Your brother..........use the Internet every day, doesn't he?............
6. Reading newspapers in the morning gives him pleasure.
-> He enjoys..............Reading newspapers in the morning..................
7. DO you like playing socccer?
-> Are you .....interested in playing socccer?........................
8.The river is too dirty for us to swim in.
-> Since.................The river is too dirty, we can't swim in it...........
10. Let's use public buses intead of motorbikes.
-> How.........about using public buses intead of motorbikes.................
Mấy bài này đều có trên mạng bạn ạ. full đáp án
Exercise 1: Rerwite the following sentences that keep the same meaning.
1. There is no faster way than this to get to the city center.
2. He is the most likely person to succeed in solving the problems.
3. We didn't arrive early enough to see the first film.
4. I'd rather you didn t smoke in here
5. It took him 2 hours to write the letter.
6. My father suggested we should go out for a while/going out for a while.
7. Though Mr.Benson is old, He runs 8 miles before breakfast.
8. It was interesting to talk to you.
9. Whatever did you do that for ?
10. made these bookshelves myself.
Exercise 2: Rerwite the following sentences that keep the same meaning.
1. You play tennis better than I do.
2. It's two years since I went to the dentist s.
3. She never went to Paris without buying a new dress.
4. After having spent seven years at secondary school I went to university.
5. There's no need to make her change her mind.
6. He denied for stealing (having stolen) the car/ that he had stolen the car.
7. Isn't there (another way/ some other way/ any other way)(to/ to reach/ reaching) the city centre.
8. At no time did he suspect (that) the money had been stolen/ someone had stolen the money.
9. If I were you, I'd take more exercise.
10. She persuaded me not to leave.
Rewrite each of the sentences so that it means the same as the one before it.
1. I went to the zoo last week and that is where I saw a real tiger for the first time.
=>Before I.........went to the zoo last week, I had never seen a real tiger...............
2. "Why don't we share the cost of the tour?" said my friend.
=> My friend suggested.......that we share the cost of the tour..........
3. Thousands of tuorists visit My Son Sanctuary every year.
=>My Son Sanctuary.......is visited by thousands of tourists every year..........
4. Can't you find a better hotel?
=> Is this..the best hotel you can find?..................
4. We don't go on holiday because we do not have enough money.
=>If we.....had enough money, we would go on holiday....................
giúp mình bài tập tiếng anh với. mai là nộp òy mà còn 1đống. Anh ...
Nhấn vào đây !
Finish each of the following sentences in such a way that it means exactly the same as the sentences printed before it
1. "If you don't take it easy, you'll have another heart attack." the doctor said to the patient.
-> The doctor warned the patient to ake it easy or he would have another heart attack
2. I know this reporter's back ground well and he's 100% honest.
-> This reporter whose background I know well is 100% honest
3. They stretched a rope from one side of the crevasse to the other in oder to (chữ bị mờ) their equipment.
=>By stretching a rope from one side of the crecasse to the other, they could haul their equipment across.
4. People no longer smoke so many cigarettes as they used to.
-> The people used to smoke more cigarettes than now
5. we've been thinking the matter over and have finally come to a decision.
-> We've given the matter a lot of thought and have finally come to a decision
6. Why isn't this TV working?
->What 's wrong with this TV?
7. I've never tasted pheasant before.
-> This is the first time i have tasted pheasant.
8. If there's an emergency, ring this number.
-> In case of emergency, ring this number.
9. I never miss out on a cup of coffee when I visit her flat.
-> She always offers me a cup of coffee when i visit her flat.
10. The engine failed because a part had been badly fitted.
-> The engine failure was caused because of a badly fitted part.
VII.Use the correct tense or form of the verb given in brackets
1.This is the first time I(hear)..have heard.....her sing
2.The equipment in our office needs(modernize).... modernizing.........
3.If I(be)..were....you,I(accept)...would accepted......their invitation
4.I(help) will help.you if I could.but I(be).am....afraid I can't5.Should I see him later,I(give)..will give...him your message
6.It's time you(start).started....to work
7.He gets used to(sing). singing very loud in the room
8.I hope you(join)..will join..in the Chiristmas celebration
9.Mrs Nga is foreve(lose)...losing.....umbrella
10.The students in class 9A5(learn).will learn...a new school nest year
11.I've decided(stop)..to stop....smoking
12.Look at those black clouds.It(rain)...is going to rain.........
13.We are tired of(work)....working.............for low salary
14.This is the second time you(break)..have broken.......a cup
15.Water.....is covered......(cover)most of the Earth's surface16.The gate.....looks...(look)at 6.30 p.m everyday
1. Nguồn mạng
1. He greatly regretted not seeing Andrey on her trip to London.
2. The accident is thought to have been caused by human error.
3. He asked Elizabeth if she would be visiting the Taj Mahal when she went.
4. The waiter recommended us to try/ that we should try………..
5.I have never tasted such a dilicious cake
Ex2
1. They’re such easy questions that everyone can answer them.
2. The boy whose parents died in a traffic accident will receive some money to continue his
study
3. Motorbikes are being produced in Vietnam
4. If I had been there yesterday, I would have known who he was
5. Unless you try hard, you can’t pass the examination.
6. The more they spent money the harder they had to work
7. The cover was thought to have been make of iron
8. He went to London where had lived when he was a boy
9. Because Jane was sick, Jane was absent from class
10. The package was so heavy that Peter couldn’t carry it
Ex3
1. If I were you, I’d take the train instead of the bus.
2. Someone must have forgotten to lock the door.
3. They have had/ owned this house for ten years.
4. At the end of the course, there was a big party.
5. The pop star that/ who/ whom we invited onto the chat show didn’t turn up.
6. Despite her saying that she would come, I don’t think she ever will.
7. No sooner had the plane left the airport than the accident happened.
8. Had you slept well last night, you wouldn’t feel tired now.
9. How long is it since you started the project ?
10. The church where their wedding will be held is lovely.
Ex4
1. My father doesn’t play football anymore
2. I was given a present on my last birthday
3. She suggests going swimming
4. He invited me a cup of tea
5. If we had had a map, I wouldn’t got lost in the jungle
6. I haven’t seen Bob since I was in Ho Chi Minh City
7. It takes three hours to drive from Hanoi to Nam Dinh.
8. I wish you had told us about it
9. The owner of the house is thought to be abroad
10. The sea was too rough for the children to go swimming
Finish each of the following sentences in such a way that it means exactly the same as the sentences printed before it
1. The rail workers do not intend to call off their strike.
-> The rail workers have no...........intention of calling off their strike........................
2. House prices have risen dramatically this year.
-> There has.....been a dramatic rise in house prices this year..........................
3. Alce and CHarles did not decide to move to a bigger house until after the birth of their second son.
-> Only when..Alce and CHarleshad they second child did they decide to move to a big house ............................................................
4. The film star wore dark glasses so that no one would recognise him.
-> The film star avoided...being recognized by wearing dark glasses.................................
5. No-one has challenged his aithority before.
-> This is the first time.......that his authority has been changed ..................................
6. If it doesn't rain soon, milions of pounds's world of crops will be lost.
-> Unless..it rains soon , milions of pounds's world of crops will be lost.........................................
7. "I don't love you anymore" said Eric to his girlfriends.
-> Eric told his girlfriends that.......she didn't love her anymore ..............................
8. My father speaks very little English.
-> My father speaks hardly
any english
.........................................
9. That dress has only the slightest mark on it.
-> I can barely .......see a mark on that dress...............................
10. No matter how hard I tried I couldn't open the door.
-> try............as hard as I might, I couldn't open the door...........................
Finish each of the following sentences in such a way that it means exactly the same as the sentences printed before it
1. The rail workers do not intend to call off their strike.
-> The rail workers have no...........intention of calling off their strike........................
2. House prices have risen dramatically this year.
-> There has.....been a dramatic rise in house prices this year..........................
3. Alce and Charles did not decide to move to a bigger house until after the birth of their second son.
-> Only when Alce and Charles had their second child did they decide to move to a bigger house.
4. The film star wore dark glasses so that no one would recognise him.
-> The film star avoided...being recognized by wearing dark glasses.................................
5. No one has challenged his authority before.
-> This is the first time.......that his authority has been changed ..................................
6. If it doesn't rain soon, millions of pounds world of crops will be lost.
-> Unless..it rains soon, millions of pounds' world of crops will be lost.........................................
7. "I don't love you anymore," said Eric to his girlfriends.
-> Eric told his girlfriends that.......she didn't love her anymore ..............................
8. My father speaks very little English.
-> My father speaks hardly any English.
9. That dress has only the slightest mark on it.
-> I can barely see a mark on that dress.
10. No matter how hard I tried I couldn't open the door.
-> Try as hard as I might, I couldn't open the door.
