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5.It rained heavily so I stayed at home.
+Unless.............................................................................................................
6. Iam hungry because I didn't eat breakfast this morning.
+If..................................................................................................................
7. Tom was absent from school. That's why he cannot do this kind of exercise now.
+If........................................................................................................................
"8. Unless you work hard for the exam, you'll fail."
+   If   ..................................................................................................................
"9. Were I to stay at home now,I would go to bed."
If..........................................................................................................................
"10. Had I not known the truth about him,Iwouldn't have been so disappointed."
Unless............................................................................................................
"11.Since she is short,she cannot take part in that contest."
+If...............................................................................................................
"12. If we started a bit later,we would miss the train."
+  Were......................................................................................................
13. Don't be late or you will be late for the beginning of the show.
If..........................................................................................................................
14. Be careful or you'll cut yourself.
+If...........................................................................................................
15. We canceled the trip because the weather was too bad.
Unless.........................................................................................

2
8 tháng 1 2022

5. Unless it rains heavily, I won't be at home.

6. If I don't eat breakfast, I'll be hungry.

7.If Tom had been absent from school,he cannot do this kind of exercise now.

8. If you work hard for the exam, you won't fail.

9. If I stay at home, I go to bed.

10. Unless I knew the truth about him, I wouldn't be so disappointed in him.

11. If she is short, she will not be able to participate in that contest.

12.Were we had a late departure so we missed the train.

13. If you're late, you'll be late at the start of the show.

 

8 tháng 1 2022

sr bạn còn câu 2 câu nx lag mình không thấy ạ

REWRITE THE FOLLOWING SENTENCES USING IF-> UNLESS TYPE1 1. If he doesn't hurry, he will be late for school -> unless 2. unless it stops raining, we won't go out -> if 3. you will get success if you are patient - unless 4. those flowers will die if nobody waters them - unless 5. no one can help him if he doesn't tell the truth - unless 6. you will catch a cold unless you keep your feet dry - if 7. if i don't catch the plane, i will not be home by five - unless 8. if you don't apologize, i will...
Đọc tiếp

REWRITE THE FOLLOWING SENTENCES USING IF-> UNLESS
TYPE1
1. If he doesn't hurry, he will be late for school
-> unless
2. unless it stops raining, we won't go out
-> if
3. you will get success if you are patient
- unless
4. those flowers will die if nobody waters them
- unless
5. no one can help him if he doesn't tell the truth
- unless
6. you will catch a cold unless you keep your feet dry
- if
7. if i don't catch the plane, i will not be home by five
- unless
8. if you don't apologize, i will never speak to you again
-unless
9. unless he gives me his number, i won't phone him
- if
10. he cannot do that exercise if he doesn't learn his lessons carefully
-unless

TYPE 2
1. unless the studied harder, he would fail the final exam
- if
2. unless the drank alcohol, he would pass the contest
- if
3. unless he phoned immediately, he wouldn't meet Mary
-if
4/ if we didn't have a calculator, we couldn't work his more quickly
-unless
5. if i weren't weak, i could walk
- unless
6. if you weren't slow now, you could uiwn the race
- unless
7. if you didn't speak very quickly, the students could hear you well
- unless
8. if tom didn't invite me, i wouldn't go to the party
- unless
9. if they didn;t know his number now, they wouldn't give it to me
- unless
10. unless he were careful, he would have serious accident
- if

TYPE3
1. if he hadn;t been too lazy, he wouldn't have failed the exam
- unless
2. unless yesterday had been a nice day, we wouldn;t have gone camping
-if
3. if you hadn't driven carefully, you would have had a serious accident
- unless
4. if the bus hadn't been crowded, he wouldn't have walked to the office
-unless
5. unless you had studied hard, you wouldn't have walked to the office
- if
6. unless you had helped me, i wouldn't have finished our homework
- if
7. unless the meeting were so long they wouldn't feel tired
- if
8. if he weren't too lazy, he would pass the exam
- unless

5
15 tháng 1 2018

REWRITE THE FOLLOWING SENTENCES USING IF-> UNLESS
TYPE1
1. If he doesn't hurry, he will be late for school
-> unless he hurry, he will be late for school
2. unless it stops raining, we won't go out
-> if it doesn't stop raining, we won't go out
3. you will get success if you are patient
- unless you aren't patient,you will get success
4. those flowers will die if nobody waters them
- unless nobody doesn't water them,those flowers will die
5. no one can help him if he doesn't tell the truth
- unless he tell the truth,no one can help him
6. you will catch a cold unless you keep your feet dry
- if you don't keep your feet dry,you won't catch a cold
7. if i don't catch the plane, i will not be home by five
- unless i catch the plane, i will not be home by five
8. if you don't apologize, i will never speak to you again
-unless you apologize, i will never speak to you again
9. unless he gives me his number, i won't phone him
- if he doesn't give me his number, i won't phone him
10. he cannot do that exercise if he doesn't learn his lessons carefully
-unless he learn his lessons carefully,he can do that exercise

15 tháng 1 2018

TYPE 2
1. unless the studied harder, he would fail the final exam
- if the didn't study harder, he would fail the final exam
2. unless the drank alcohol, he would pass the contest
- if the didn't drink alcohol, he would pass the contest
3. unless he phoned immediately, he wouldn't meet Mary
-if he didn't phone immediately, he wouldn't meet Mary
4/ if we didn't have a calculator, we couldn't work his more quickly
-unless we didn't have a calculator, we couldn't work his more quickly
5. if i weren't weak, i could walk
- unless i were weak, i could walk
6. if you weren't slow now, you could uiwn the race
- unless you were slow now, you could uiwn the race
7. if you didn't speak very quickly, the students could hear you well
- unless you spoke very quickly, the students could hear you well
8. if tom didn't invite me, i wouldn't go to the party
- unless tom invited me, i wouldn't go to the party
9. if they didn;t know his number now, they wouldn't give it to me
- unless they knew his number now, they wouldn't give it to me
10. unless he were careful, he would have serious accident
- if he weren't careful, he would have serious accident

1/ Ann didn't pass the antrance examination, so she wasn't admitted to the university. --> If........... --> Unless .......... 2/ I am not at home now, so I can't answer your phone. --> If..... --> Unless...... 3/ Have you told her about the present ( Passive ) -->..... 4/ Tom is answering this question at the momments ( Passive ) -->....... 5/ I fell asleep because the film was so boring. --> If.... --> Unless...... 6/ Because he cut these young trees. He was punished. --> If....... -->...
Đọc tiếp

1/ Ann didn't pass the antrance examination, so she wasn't admitted to the university.
--> If...........
--> Unless ..........
2/ I am not at home now, so I can't answer your phone.
--> If.....
--> Unless......
3/ Have you told her about the present ( Passive )
-->.....
4/ Tom is answering this question at the momments ( Passive )
-->.......
5/ I fell asleep because the film was so boring.
--> If....
--> Unless......
6/ Because he cut these young trees. He was punished.
--> If.......
--> Unless.....
7/ If she doesn't work harder, she will lose the job.
--> If....
--> Unless......
8/ My boyfriend didn't give me the address, so I couldn't meet him.
--> If......
--> Unless......
9/ We couldn't visit the museum because we didn't have enough time.
--> If.....
--> Unless....
10/ She does a lot of household chores so she fells very tired.
--> If.....
--> Unless......
11/ It is rainning now, so I will not go for a walk.
--> If......
--> Unless....
12/ The building is too high. He can't climp up
--> If......
--> Unless......
13/ I couldn't make a film because I wasn't a good director
--> If
--> Unless...
14/ He didn't work hard last term, he lost his job.
--> If.....
---> Unless

2
6 tháng 1 2020

3/ Have you told her about the present ( Passive )
--> Has she been told about the present ?
4/ Tom is answering this question at the momments ( Passive )
--> This question is being answered by Tom at the moment.

6 tháng 1 2020

1/ Ann didn't pass the antrance examination, so she wasn't admitted to the university.
--> If An wass pass the antrance examination, she wouldn't admitted to the university.
--> Unless passed the antrance examination, so she wasn't admitted to the university.
2/ I am not at home now, so I can't answer your phone.
--> If I am not at home now, I Will answer your phone.
--> Unless I am at home now , I canswer your phone.
3/ Have you told her about the present ( Passive )
-->.....
4/ Tom is answering this question at the momments ( Passive )
-->.......
5/ I fell asleep because the film was so boring.
--> If the film was so boring, I would fell asleep
--> Unless the film was so boring, I wouldn'd fell asleep
6/ Because he cut these young trees. He was punished.
--> If he cutted these young trees, He would punished.
--> Unless he cutted these young trees, He wouldn't punished.
7/ If she doesn't work harder, she will lose the job.
--> If she works harder, she won't lose the job.
--> Unless she works harder, she will lose the job.
8/My boyfriend didn't give me the address, so I couldn't meet him.

--> If My boyfriend wass give me the address, I couldn't meet him.
--> Unless My boyfriend gave me the address, I couldn't meet him.
9/ We couldn't visit the museum because we didn't have enough time.
--> If we didn't have enough time, We couldn't visit the museum
--> Unless we had enough time, We couldn't visit the museum
10/ She does a lot of household chores so she fells very tired.
--> If She does a lot of household chores s, she will fell very tired.
--> Unless She doesn't do a lot of household chores , she will fells very tired.
11/ It is rainning now, so I will not go for a walk.
--> If It is rainning now, I will not go for a walk.
--> Unless It is rainning now, I won't not go for a walk.
12/ The building is too high. He can't climp up
--> If The building was too high, He coldn't climp up
--> Unless The building Was too high, He could climp up
13/ I couldn't make a film because I wasn't a good director
--> If I wasn't a good director, I couldn't make a film
--> Unless I was a good director, I couldn't make a film
14/ He didn't work hard last term, he lost his job.
--> If He wasn't work hard last term, he could lost his job.
---> Unless He was work hard last term, he could lost his job.

Rewrite the following sentences 1. He smokes too much; that's why he can't get rid of his cough.->Were...................... 2.He doesn't take any execises. He is so unhealthy->Were............................. 3.We can't get the ticket because I don't have the right change.->Were..................... 4.Study hard or you won't pass the exam.-> Should......................... 5.Don't be impatient or you will make mistakes.->Should.................. 6.I didn't eat lunch, I feel hungry...
Đọc tiếp

Rewrite the following sentences

1. He smokes too much; that's why he can't get rid of his cough.->Were......................

2.He doesn't take any execises. He is so unhealthy->Were.............................

3.We can't get the ticket because I don't have the right change.->Were.....................

4.Study hard or you won't pass the exam.-> Should.........................

5.Don't be impatient or you will make mistakes.->Should..................

6.I didn't eat lunch, I feel hungry now.->Had.....................

7.I only come if they invite me.->Unless..........

8.He didn't revise all his lesson, he failed the exam.->Had...........................

9. The park is over there, only 5 minutes walk.->If you walk.......................

10.Leave me alone or I'll call the police.->Unless..................

11.The car breaks down so often because you don't take good care of it.->Were you.................

12.He is very bad-tempered, that's why his wife left him soon after marriage.->If........................

13.Don't tell lies to your boss or you'll be fired at once.-Should..............

14.She got married at such an early age: otherwise, she would be at unisersity now.-> Had...........................

0
Rewrite the following sentences 1. He smokes too much; that's why he can't get rid of his cough.->Were...................... 2.He doesn't take any execises. He is so unhealthy->Were............................. 3.We can't get the ticket because I don't have the right change.->Were..................... 4.Study hard or you won't pass the exam.-> Should......................... 5.Don't be impatient or you will make mistakes.->Should.................. 6.I didn't eat lunch, I feel hungry...
Đọc tiếp

Rewrite the following sentences

1. He smokes too much; that's why he can't get rid of his cough.->Were......................

2.He doesn't take any execises. He is so unhealthy->Were.............................

3.We can't get the ticket because I don't have the right change.->Were.....................

4.Study hard or you won't pass the exam.-> Should.........................

5.Don't be impatient or you will make mistakes.->Should..................

6.I didn't eat lunch, I feel hungry now.->Had.....................

7.I only come if they invite me.->Unless..........

8.He didn't revise all his lesson, he failed the exam.->Had...........................

9. The park is over there, only 5 minutes walk.->If you walk.......................

10.Leave me alone or I'll call the police.->Unless..................

11.The car breaks down so often because you don't take good care of it.->Were you.................

12.He is very bad-tempered, that's why his wife left him soon after marriage.->If........................

13.Don't tell lies to your boss or you'll be fired at once.-Should..............

14.She got married at such an early age: otherwise, she would be at unisersity now.-> Had...........................

2
14 tháng 8 2019

Rewrite the following sentences

1. He smokes too much; that's why he can't get rid of his cough.

->Were he not to smoke too much, he could get rid of his cough.

2.He doesn't take any exercises. He is so unhealthy

->Were he to take some exercise, we would be so healthy.

3.We can't get the ticket because I don't have the right change.

->Were I to have the right change, we could get the ticket.

4.Study hard or you won't pass the exam.

-> Should you study hard, you will pass the exam.

5.Don't be impatient or you will make mistakes.

->Should you be impatient, you will make mistakes.

6.I didn't eat lunch, I feel hungry now.

->Had I eaten lunch, I wouldn't feel hungry now.

7.I only come if they invite me.

->Unless they invite me, I won't come.

8.He didn't revise all his lesson, he failed the exam.

->Had he revised all his lesson, he wouldn't have failed the exam.

9. The park is over there, only 5 minutes walk.

->If you walk to the park, it will take you 5 minutes.

10.Leave me alone or I'll call the police.

->Unless you leave me alone, I'll call the police.

11.The car breaks down so often because you don't take good care of it.

->Were you to take good care of the car, it wouldn't break down so often.

12.He is very bad-tempered, that's why his wife left him soon after marriage.

->If he were not very bad-tempered, his wife wouldn't have left him soon after marriage.

13.Don't tell lies to your boss or you'll be fired at once.

->Should you tell lies to your boss, you'll be fired at once.

14.She got married at such an early age: otherwise, she would be at unisersity now.

-> Had she not got married at such an early age, she would have been at unisersity now.

14 tháng 8 2019

1. He smokes too much; that's why he can't get rid of his cough.

-> Were he not to smoke too much, he couldn't get rid of his cough.

2.He doesn't take any execises. He is so unhealthy

-> Were he to take any execises, he wouldn't be so unhealthy.

3.We can't get the ticket because I don't have the right change.

-> Were I to have the right change, we couldn't get the ticket.

4.Study hard or you won't pass the exam.

-> Should you hard study, you will pass the exam.

5.Don't be impatient or you will make mistakes.

-> Should you be impatient, you won't make mistakes.

6.I didn't eat lunch, I feel hungry now.

-> Had I eaten lunch, I wouldn't feel hungry now.

7.I only come if they invite me.

-> Unless they invite me, I won't come.

8.He didn't revise all his lesson, he failed the exam.

-> Had he revised all his lesson, he woulfn't have failed the exam.

9. The park is over there, only 5 minutes walk.

-> If you walk to the park, it will take you only 5 minutes.

10.Leave me alone or I'll call the police.

-> Unless you leave me alone, I'll call the police.

11.The car breaks down so often because you don't take good care of it.

-> Were you to take good care of the car, it wouldn't break down so often.

12.He is very bad-tempered, that's why his wife left him soon after marriage.

-> If he wasn't very bad-tempered, his wife wouldn't have left him soon after marriage.

13.Don't tell lies to your boss or you'll be fired at once.

-> Should you tell lies to your boss, you'll be fired at once.

14.She got married at such an early age: otherwise, she would be at unisersity now.

-> Had she not got married at such an early age, she would be at unisersity now.

27 tháng 7 2019

4. If she had written slowly

5. Would have been able to

6. Working, he would have had enough money now

7. If you had told

8. Eat too much,

9. It hadn't rained

10. Get dressed right away

27 tháng 7 2019

4. she wrote very fast and as a result made a lot of mistakes (slowly)

➜if she ....had written slowly..................she wouldn't have made so many mistakes

5.owing to technical difficulties the plane was not able to take off.(able)

➜if there hadn't been technical difficulties, the plane ...would have been able to.........take off

6. he hasn't got enough money now because he didn't save when he was working. (would)

➜if he had saved when he was ...working, he would have had enough........ money now

7. it's just as well you told me or i might have married him (you )

➜i might have married him ..........me( Câu này k chắc...)

8. eating too much makes you fat (eat)

➜ if you ...eat too much, that will make...............you fat

9. we couldn't play tennis yesterday because of the rain. (rained)

➜if...it hadn't rained........................would've been able to play tenniss yesterday

10. if you don't get dressed right away we'll go without you. (put)

➜unless...you put on...............right away we'll go without you

18 tháng 4 2020

Exercise: Kết hợp câu dùng câu điều kiện.

11. If you do not like this one, I'll bring you another.

--> Unless you like this one, I'll bring you another.

12. Martin failed his driving test last week because he was very nervous.

--> If Martin hadn't been very nervous, he wouldn't have failed his driving test last week.

13. He paid me last night. I had enough money to buy a car.

--> If he hadn't paid me last night, I wouldn't have had enough money to buy a car.

14. I stayed up late last night that's why I can't get up early today.

--> If I hadn't stayed up late last night, I could get up early today.

15. If you can't arrive at the office earlier, please turn on the airconditioner.

--> Unless you can arrive at the office earlier, please turn on the airconditioner.

16. He got troubles, so he couldn't go to the airport on time.

--> If he hadn't got troubles, he could have gone to the airport on time.

17. The car breaks down so often because you don't take good care of it.

--> If you took good care of the car, it wouldn't broke down so often.

18. He tells lies to his boss that's why he is fired at once.

--> If he didn't tell lies to his boss, he wouldn't be fired at once.

19. He didn't revise all his lessons, so he failed the exam.

--> If he had revised all his lessons, he wouldn't have failed the exam.

20. Rita is exhausted today because she didn't sleep last night.

--> If Rita had slept last night, she wouldn't be exhausted today.

18 tháng 4 2020

Cám ơn =))

1 She didnt talk to him because she was shy If..... 2 Peter didnt come, so we cancelled the meeting. If..... 3 Jack was late to the meeting because his watch was slow. If...... 4 We dont live in the city, so we cant easily get access to the Internet. If.... 5 he didnt take part in the event because he lacked confindence. If.... 6 she didnt talk to him because she was shy If.... 7 peter didnt come, so we cancelled the meeting If.... 8 jack was late to the meeting because his watch was...
Đọc tiếp

1 She didnt talk to him because she was shy
If.....
2 Peter didnt come, so we cancelled the meeting.
If.....
3 Jack was late to the meeting because his watch was slow.
If......
4 We dont live in the city, so we cant easily get access to the Internet.
If....
5 he didnt take part in the event because he lacked confindence.
If....
6 she didnt talk to him because she was shy
If....
7 peter didnt come, so we cancelled the meeting
If....
8 jack was late to the meeting because his watch was slow.
If....
9 we dont live in the city, so we can easily get access to the internet.
If....
10 i dont have enough free time, I cant help my mother with the housework
If......
11. The crops will be ruined if I doesnt rain soon.
Unless......
12 unless the weather is fine, we'll stay at home
If.....
13. I cant go with you unless I get my workfinished.
If.....
14 if you dont leave on the 15th, you'll get home late for your mother's party.
Unless.....
15 . Tom never does anything unless his father tells hime what to do.
If......

0
WRITE A SENTENCE WITH IF FOR EACH SITUATION 1. he is poor, so he can't make an abroad tour -> were 2. we came home from ourr holiday early because we ran out of money -> had 3. i can't enter the room now because i left the key at home -> if 4/ the men is wearing protective clothing, so they are safe -> the men would 5. be patient or you will destroy everything -> if you 6. they used to drink beer for breakfast in england years ago -> beer REWRITE THE FOLLOWING SENTENCES 1. i think you...
Đọc tiếp

WRITE A SENTENCE WITH IF FOR EACH SITUATION
1. he is poor, so he can't make an abroad tour
-> were
2. we came home from ourr holiday early because we ran out of money
-> had
3. i can't enter the room now because i left the key at home
-> if
4/ the men is wearing protective clothing, so they are safe
-> the men would
5. be patient or you will destroy everything
-> if you
6. they used to drink beer for breakfast in england years ago
-> beer

REWRITE THE FOLLOWING SENTENCES
1. i think you shouldn't take part in this dancing club
-> if i
2. i advise you to listen to the teacher during the lesson
-> if i
3. leave me alone or i will call the police
-> if
4. finish your paper or you can't go home
-> if
5. they made the little boy climb the chimneys to clean them
-> the little boy
6. they say exercise is good for health
-> exercise
7. you need to have your hair cut
-> your hair
8. andrew wanted to ask Frank Sinatra for his autograph, but he wasn't brave enough
-> had
9. i don't know anything about plumbing so i can't fix the leak in the sink myself
-> were
10. you need to have your housse rebuilt
-> your house
11. my parents have just given one of my most favorite toy to me
-> one of my most favorite toys
12. it is said that on of the workers quits the job
-> one of the workers
13. the students need to do homework every day
-> the homework
14. my father made me get to school by bike
-> i
15. the kind boss has allowed the unemployed to work in his company
-> the unemployed
16. he doesn't like people laughing at him
-> he doesn't like
17. mrs. lan has taken care of the old in my neighborhood recently
-> the old in my neighborhood
18. no one in my family has eaten a snail before
-> a snail
19. nobody in the party has tasted my dishes
-> my dishes
20. bring the raincoat with you or you will get wet on the way back
-> should
21. there is a grammar error in this English essay, that's why it can't get a full mark
-> if
22. because i don't have a typewriter, i can't type it myself
-> i could
23. he was tired so he made a mistake
-> if
24. he has just brought some cups of tea to the visitors in the next room
-> some cups of tea
25. she can't be employed because she doesn't have college degree
-> if she
26. there are industrial factories inside the city, that's why pollution can't be reduced
-> pollution could
27. it rained heavily so they didn't go camping last sunday
-> had
28. although the weather was bad, i still got to schoold
-> in spite of
29. he still went to work although he felt too tired
-> despite
30. because it rained , we decided to stay home and watch tv
-> because of

2
6 tháng 2 2018

WRITE A SENTENCE WITH IF FOR EACH SITUATION
1. he is poor, so he can't make an abroad tour
-> were he not poor, he could make an abroad tour
2. we came home from ourr holiday early because we ran out of money
-> had we not run out of money,we wouldn't have come home from ourr holiday early
3. i can't enter the room now because i left the key at home
-> if I hadn't left the key at home,I would have entered the room now
4/ the men is wearing protective clothing, so they are safe
-> the men wouldn't be safe if they weren't wearing protective clothing
5. be patient or you will destroy everything
-> if you aren't patient, you will destroy everything
6. they used to drink beer for breakfast in england years ago
-> beer used to be drunk for breakfast in england years ago

10 tháng 2 2018

#cont

REWRITE THE FOLLOWING SENTENCES
1. i think you shouldn't take part in this dancing club
-> if i were you,I wouldn't take part in this dancing club
2. i advise you to listen to the teacher during the lesson
-> if i were you,I would listen to the teacher during the lesson
3. leave me alone or i will call the police
-> if you leave me alone , i will call the police
4. finish your paper or you can't go home
-> if you don't finish your paper , you can't go home
5. they made the little boy climb the chimneys to clean them
-> the little boy was made to climb the chimneys to clean them
6. they say exercise is good for health
-> exercise is said to be good for health
7. you need to have your hair cut
-> your hair needs cutting
8. andrew wanted to ask Frank Sinatra for his autograph, but he wasn't brave enough
-> had andrew been brave enough,he would have asked Frank Sinatra for his autograph.
9. i don't know anything about plumbing so i can't fix the leak in the sink myself
-> were I to know anything about plumbing ,I could fix the leak in the sink myself
10. you need to have your housse rebuilt
-> your house needs rebuilting
11. my parents have just given one of my most favorite toy to me
-> one of my most favorite toys has just been given to me by parents
12. it is said that on of the workers quits the job
-> one of the workers is said to quit the job
13. the students need to do homework every day
-> the homework needs doing be the students everyday
14. my father made me get to school by bike
-> i was made to get to school by bike
15. the kind boss has allowed the unemployed to work in his company
-> the unemployed have been allowed to work in the kind boss's company
16. he doesn't like people laughing at him
-> he doesn't like being laughed at
17. mrs. lan has taken care of the old in my neighborhood recently
-> the old in my neighborhood has been taken care by mrs lan recently
18. no one in my family has eaten a snail before
-> a snail has never been eaten before in my family
19. nobody in the party has tasted my dishes
-> my dishes has never been tasted in the party
20. bring the raincoat with you or you will get wet on the way back
-> should you bring the raincoat with you or you will get wet on the way back
21. there is a grammar error in this English essay, that's why it can't get a full mark
-> if there weren't a grammar error in this English essay, it could get a full mark

22. because i don't have a typewriter, i can't type it myself
-> i could type it if I had a typewriter
23. he was tired so he made a mistake
-> if he weren't tired ,he wouldn't have made a mistake
24. he has just brought some cups of tea to the visitors in the next room
-> some cups of tea have just been bought for the visitors in the next room
25. she can't be employed because she doesn't have college degree
-> if she had college degree,she could be employed
26. there are industrial factories inside the city, that's why pollution can't be reduced
-> pollution could be reduced if there weren't industrial factories inside the city
27. it rained heavily so they didn't go camping last sunday
-> had it not rained heavily ,they would have gone camping last sunday
28. although the weather was bad, i still got to schoold
-> in spite of the bad weather,i still got to schoold
29. he still went to work although he felt too tired
-> despite being tired,he still went to work
30. because it rained , we decided to stay home and watch tv
-> because of raining, we decided to stay home and watch tv