1. If it stops raining, we will go out.

2. If you give me back my bicycle, I won't call the police.

3. If your English were good, I would do this exercise.

4. If we had enough rain, we could grow rice.

5. If the fishermen had good nets, they could catch a lot of fish.

6. If I afforded it, I could buy it.

7. If they pay my expenses, I will go.

8. If he change his economic policy, I will vote for him.

9. If he heard news, he would write it.

10. If you went to the dentist regularly, you wouldn't have a terrible toothache.

1.If she doesn't have a university degree, she won't be employed.
2. If I want to take a long vacation this year, I must have enough money.
3. An important task like this will not be given to him because he is a slow person.
4.If she wants to pass the exam, she can't be lazy
5.If he needs more money to pay for his father, he has to work overtime
6. Everything is very expensive, the new city is not interesting
7.If she doesn't study hard, she will get bad grades
8.Forgot the map and you will get lost
9. We will call you if someone doesn't show up
10.They get very angry if their friends don't come on time

1/ We won’t go out unless it stops raining.

We won’t go out if it doesn't stop raining.

2/ I will call the police unless you give back my bike

I will call the police if you don't give back my bike

3/ You wouldn’t be able to do this exercise unless your English were good

You wouldn’t be able to do this exercise  if your English weren't good

4/ Unless we had enough rain, we couldn’t grow rice.

If we didn't have enough rain, we couldn’t grow rice.

5/ I wouldn’t buy it unless I could afford it.

I wouldn’t buy it if I couldn't afford it.

6/ I would refuse to go unless they paid my expenses.

I would refuse to go if they didn't pay my expenses.

use " if " in place of " unless " . use " should " to rewrite them .

1 , we won't go out unless it stops raining .

- ....If it stopped rainning, we would go out...................

- ....Unless it stopped raining, we would go out..........

2 , I will call the police unless you give back my bicycle .

- ......If you gave back my bike, I will call the police.....................

- .....Unless you not gave back my bike, I won't call the police.............

3 , you wouldn't be able to do this exercise unless your English were good.

- ....If you good at English, you will be able to do this exercise.............

-.Unless you not bad at English, you wouldn't be able to do this exercise...................

EXERCISE IV: Use “if” in place of “unless”

1/ We won’t go out unless it stops raining.

- We won't go if it doesn't stop raining

2/ I will call the police unless you give back my bicycle.

- I will call the police if you don't give back my bicycle

3/ You wouldn’t be able to do this exercise unless your English were good.

- You wouldn’t be able to do this exercise if your English weren't good

4/ Unless we had enough rain, we couldn’t grow rice.

- If we didn't have enough rain, we couldn't grow rice

5/ The fishermen couldn’t have caught a lot of fish unless they had had good nets.

- The fishermen couldn’t have caught a lot of fish if they hadn't had good nets

EXERCISE IV: Use “if” in place of “unless”

1/ We won’t go out unless it stops raining.

=> We won’t go out if it doesn't stop raining.

2/ I will call the police unless you give back my bicycle.

=> I will call the police if you don't give back my bicycle.

3/ You wouldn’t be able to do this exercise unless your English were good.

=> You wouldn’t be able to do this exercise if your English were not good.

4/ Unless we had enough rain, we couldn’t grow rice.

=> If we didn't have enough rain, we couldn’t grow rice.

5/ The fishermen couldn’t have caught a lot of fish unless they had had good nets.

=> The fishermen couldn’t have caught a lot of fish if they hadn't had good nets.

V. Use “if” in place of “unless”

1/ We won’t go out unless it stops raining.

- We won't go out if it doesn't stop raining.

2/ I will call the police unless you give back my bicycle.

-I will call the police if you don't give back my bicycle.

3/ You wouldn’t be able to do this exercise unless your English were good.

-You wouldn't be able to do this exercise if your English weren't good.

4/ Unless we had enough rain, we couldn’t grow rice.

-If we didn't have enough rain, we couldn't grow rice

5/ The fishermen couldn’t have caught a lot of fish unless they had had good nets.

-The fisherman couldn't have caught a lot of fish if they hadn't had good nets.

1.We won't go out if it doesn't stop raining

2.I will call the police if you don't give back my bicycle

3.You wouldn't be able to do this exercise if your English were not good

4.If we didn't have enough rain, we couldn't grow rice

5.The fishermen couldn't have caught a lot of fish if they hadn't had good nets

1/ We won't go out unless it stops raining 
--> We won't go out if it doesn't stop raining 
2/ I will call the police unless you give back my bicycle 
--> I will call the police if you don't give back my bicycle 
3/ You wouldn't be able to do this exercise unless your English were good 
--> You wouldn't be able to do this exercise if your English were not good 
4/ Unless we had enough rain, we couldn't grow rice 
--> If we didn't have enough rain, we couldn't grow rice 
5/ The fishermen couldn't have caught a lot of fish unless they had had good nets 
--> The fishermen couldn't have caught a lot of fish if they hadn't had good nets 
6/ I wouln't buy it unless I could afford it 
--> I wouln't buy it if I couldn't afford it 
7/ I would refuse to go unless they paid my expenses 
--> I would refuse to go if they didn't pay my expenses 
8/ I don't agree with his economic policy. I wouldn't vote for him unless he changed it 
--> I don't agree with his economic policy. I wouldn't vote for him if he didn't change it 
9/ He wouldn't have written unless he had heard news 
--> He wouldn't have written if he hadn't heard news 
10/ You might not have a terrible toothache unless you went to the dentist regularly 
Câu này phải bỏ "not" thì mới đúng nghĩa. 
You might have a terrible toothache unless you went to the dentist regularly 
--> You might have a terrible toothache if you didn't go to the dentist regularly 

Chúc you hok tốt nhé 

1/ We won't go out unless it stops raining 
--> We won't go out if it doesn't stop raining 
2/ I will call the police unless you give back my bicycle 
--> I will call the police if you don't give back my bicycle 
3/ You wouldn't be able to do this exercise unless your English were good 
--> You wouldn't be able to do this exercise if your English were not good 
4/ Unless we had enough rain, we couldn't grow rice 
--> If we didn't have enough rain, we couldn't grow rice 
5/ The fishermen couldn't have caught a lot of fish unless they had had good nets 
--> The fishermen couldn't have caught a lot of fish if they hadn't had good nets 
6/ I wouln't buy it unless I could afford it 
--> I wouln't buy it if I couldn't afford it 
7/ I would refuse to go unless they paid my expenses 
--> I would refuse to go if they didn't pay my expenses 
8/ I don't agree with his economic policy. I wouldn't vote for him unless he changed it 
--> I don't agree with his economic policy. I wouldn't vote for him if he didn't change it 
9/ He wouldn't have written unless he had heard news 
--> He wouldn't have written if he hadn't heard news 
10/ You might not have a terrible toothache unless you went to the dentist regularly 
--> You might not have a terrible toothache if you go to the dentist regularly 

1. Unless he hurries, he'll be late for school.

2. If it stops raining, we'll go out.

3. If he didn't study harder, he would fail the final exam.

unless he hurries, he will be late for school

if it stops raining, we will go out

if he didn't study harder, he would fail the final exam

1.-> If they had left the house early, they wouldn't have late for the play.
2.->If it stops raining, we will go out.
3.->If you had kept your feet dry, you wouldn't have caught cold.

1. They didn’t leave the house early so they were late for the play.

-> If they ………had left the house early, they wouldn't have been late for the play……………………………………………

2. Unless it stops raining, we won’t go out.

-> If it ……doesn't stops raining, we won't go out…………………………………………….

3. You caught cold because you didn’t keep your feet dry.

-> If you …had kept your feet dry, you wouldn't have caught cold…………………………………………………………..

4. Review the lesson carefully; otherwise you can’t do the test well.

->  Unless you……revise  the lesson carefully, you can’t do the test well.………………………………………………

5. “If you happen to see the man, you may give this book to him.” He said to the girl.

-> He said to the girl ……if she happened to see the man, she might give that book to him………………………………………………

6.  “I wouldn’t have been upset if she had written to me earlier,” the man said.

-> The man said …he wouldn't be upset if she had written  to him earlier…………………………………………………

7.  “The boss would complain if we didn’t report it to him.” David said to his colleagues.

-> David said …the boss would complain if they didn't report to him…………………………………………………

8.  “Mum would be cross if you went on doing like this,” the girl said to her younger brother.

-> The girl said …to her younger brother Mum would be cross if he went on doing like that…………………………………………………