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1) The schoolchildren sowed some seeds, but they forgot to water them so they didn't grow.->If the children......hadn't forgot to water some seeds, they would have grown.................
2) They don't understand the problem. They won't find a solution.->Should.......they understand the problem, they will find a solution..............
3.He sits around too much. He isn't fit.->Were....he to sit around to much, he would be fit.............
4.Rita is exhausted today because she didn't get any sleep last night.->Had......rita got sleep last night, she would be exhausted today...............
5.She's very thin; perhaps that's why she feels cold so much.-> If she......wasn't thin, she wouldn't cold so much.......................
6.He never polishes his shoes, so he never looks smart.-> If he.......polished his shoes, he would look smart................
7.He can't park near his office; that's why he doesn't come by car.-> If he........could park near his office, he would come by car..............
8. My house is guarded by two big dogs. That's the only reason it isn't broken into every night.->If my house..........weren't guarded by 2 big dogs, it would be broken into everynight........
9.The flats are not clearly numbered, so it is very difficult to find anyone.-> If the flats.....were clearly numbered, it wouldn't be very difficult to find............................
10.I don't know her e-mail address, so I can't tell you.->Were.....i to knew her email address, i could tell you.................
REVIEW
21. Because he sits around too much, he isn't fit
-> if he didn't sit around too much, he woudn't fit
22. Rita was exhausted because she didn't get any sleep
-> if rita had got sleep,she wouldn't have been exhausted
23. She's very thin; perhaps that's why she feels cold so much
-> if she weren't thin,she wouldn't feel cold so much
24. He never polishes his shoes, so he never looks smart
-> if he polished his shoes, he would loook smart
25. He can't park near his office;that's whyvhe doesn' come by car
-> if he could park near his office,he would come by car
26. My house is guarded by two big dogs. That's the only reason it isn't broken into every night
-> if my house weren't guarded by two big dogs.,it would be broken into every night
27. The flats were not clearly numbered, so it was very difficult to find them
-> if the flats had been clearly numbered, it wouldn't have been very difficult to find them
28. I don't know her email address so i can't tell you
->if i knew her email address sI could tell you
29. She doesn't live in london because she doesn't know anyone there
-> she would know someone there if She lived in london
30. I couldn't live in the country because i couldn't find a job here
->i could live in the country if i could find a job here
31. She had no time to play with her children because she worked in the evening
-> if she hadn't worked in the evening,she would have had time to play with her children
32. He doesn't see the signal so he doesn't stop his car
-> if he saw the signal ,he wouldt stop his car
33. Marry doesn't have enough money so she can't buy a new car
-> marry could buy a new car if she had enough money
34. Prepare the lesson well or you won't understand it
-if you don't Prepare the lesson well ,you won't understand it
35. He doesn't apply for thr job because he doesn't have enough qualification
-> if he had enough qualification.he would apply for thr job
36. Hurry up or we will be late for the exam
-> if we don't Hurry up ,we will be late for the exam
37. They do not understand you because you do not often talk to them
-> unless you often talk to them,They do not understand you
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.
2. would -> wouldn't
5 viết lại bằng câu đk loại 1 nhé
If he reads in bad light, he will ruin his eyes
Hãy hoàn tất câu thứ hai để có nghĩa tương đương như câu thứ nhất, dùng câu điều kiện
1. He doesn't come, so I can't speak to him about it
-> If......................he came, i could speak to him about it........................
2. His bicycle is broken, so his friend gives him a lift
-> If.....................his bicycle wasn't broken, his friend would give him a lift...........................
3. You didn't leave soon, so you didn't get there by noon
-> If..................you had left soon, you would have got there by noon..............................
4. He was in a hurry, so he left his briefcase on the bus
-> If.....................he hadn't been in a hurry, he wouldn't have left his briefcase on the bus...........................
5. He will ruin his eyes because he reads in bad light
-> If..................he didn't read in bad light, he wouldn't ruin his eyes..............................
6. He didn't understand the lesson because he didn't listen carefully
-> If.....................he had listened carefully, he would have understood the lesson...........................
7. She doesn't ask for help because she doesn't know that man
-> If.....................she knew that man, she would ask for help...........................
8. The newspaper didn't print the story because it wasn't true
-> If.....................the story had been true, the newspaper would have printed it...........................
Exercise:
1. We can only apply after they send you the application.
=> Only after they you the application can we apply
2. He told such a strange story that nobody believed it.
=> Such a strange story was it that nobody believed it
3. She was so angry that she didn't say a word.
=> Such was her anger that she didn't say a word.
4. Nam knows little about science.
=> Little does Nam know about science
5. He will only phone if he changes his mind.
=> Only if he changes his mind will he phone
6. He never expressed regret for what he had done.
=> At no time did he express regret for what he had done
7. It was not until I left home that I realized how much my father meant to me.
=> Not until I left home did I realize how much my father meant to me
8. I have never seen a camel in my life
=> Never in life have I seen a cannel
9. Ann is good-looking and well-behaved.
=> Not only is Ann good-looking but also well-bahaved
10. He was able to make himself heard only by shouting.
=> Only by shouting was he able to make himself heard
11. If an emergency arises, call 911
=> Should an emergency arises, call 911
12. He didn't follow my advice and he lost his way.
=> Had he followed my advice, he wouldn't have lost his way
13. This switch must not be touched on any account.
=> On no account must this swtich be touched
14. Anticeptics were first used only in 1865.
=> Only in ..... 1865 were anticaptics first used
15. Hoa didn't go to the party. Mai didn't either. => Hoa didn't go to the party and neither... did Mai
16. Amanda seldom buys a newspaper.
=> Seldom .... does Amanda buy a newspaper
17. Coffee contains caffein and tea does, too. (Use SO instead of TOO)
-> Coffee contains caffein so does tea
18. The staff members' telephone numbers shouldn't be given out under any circumstances.
=> Under no circumstances should staff member's telephone numbers be given out
19. The explorers had not been met with more hospitality anywhere than in the Nepalese village.
=> Nowhere had the explorers been met with more hospitality than in the Nepalese village.
20. The demand was so great that they had to print the book immediately.
-> So great was the damand that they had to print the book immediately
21. Everyone started complaining the moment the announcement was made.
=> No sooner had the announcement was made than everyone started complaining
22. She had hardly begun to speak when people started interrupting her.
=> Hardly... had she bagun to speak when people started interrupting her
23. Jack not only broke his leg but also injured his shoulders.
-> Not only did Jack break his leg but he also injured his shoulders
24. A basket full of food was under the tree.
=> Under... the tree was a basket full of food
25. The dog jumped up when it saw its master.
->Up ..... jumped the dog when it saw its master
26. I won't read the book until I have finished my exams next month.
=> Only when I have finished my exams next month will I read the book
Or: Only when finishing my exams next month will I read the book
27. The tea was so strong that we couldn't finish it.
=> So strong was the tea that we couldn't finish it
28. My mother doesn't have to wash clothes by hand any more.
=> No longer had my mother had to wash clothes
29. Tom couldn't say a word as he was so shocked.
=> So shocked was Tom that he couldn't say a word.
30. You won't get the car if you don't pay cash.
=> Only if you pay cash will you get the car
< P/s : Lần sau đăng một lần khoảng chục câu thế này thôi bạn nhé. Hic.... nhìn 30 câu mà muốn gớt nước mắt luôn á 
>
Hãy hoàn tất câu thứ hai để có nghĩa tương đương như câu thứ nhất
1. She doesn't watch her food, so she burns it
-> If she watched her food , she wouldn't burn it
2. He doesn't have a bicycle, so he can't go to a picnic
-> If he had a bicycle , he could go to a picnic
3. The weather is cold, so I don't go out at night
-> If the weather weren't cold , I would go out at night
4. He feels hungry in class because he doesn't eat breakfast
-> If he ate breakfast , he wouldn't feel hungry in class
5. She is sad because she lives far away from her family
-> If she didn't live far away from her family , she wouldn't be sad
6. Because the traffic is heavy, he often goes to school late
-> If the traffic were not heavy , he wouldn't often go to school late
7. He doesn't pass the exam, so his parents are disappointed
-> If he passed the exam , his parents wouldn't be disappointed
8. She knows the boy is hungry, so she feeds him
-> If she knows the boy is hungry , she will feed him
#Yumi
REVIEW
21. Because he sits around too much, he isn't fit
-> if he didn't sit around too much, he woudn't fit
22. Rita was exhausted because she didn't get any sleep
-> if rita had got sleep,she wouldn't have been exhausted
23. She's very thin; perhaps that's why she feels cold so much
-> if she weren't thin,she wouldn't feel cold so much
24. He never polishes his shoes, so he never looks smart
-> if he polished his shoes, he would loook smart
25. He can't park near his office;that's whyvhe doesn' come by car
-> if he could park near his office,he would come by car
26. My house is guarded by two big dogs. That's the only reason it isn't broken into every night
-> if my house weren't guarded by two big dogs.,it would be broken into every night
27. The flats were not clearly numbered, so it was very difficult to find them
-> if the flats had been clearly numbered, it wouldn't have been very difficult to find them