TYPE 1

1. Unless you study harder, you'll get bad mark

2. If this man isn't a driver, he can't help you move by car

3. Unless he practice writing everyday, he can't improve his writing skill

4. If you don't return this book to the library today, you'll have to pay a fine

5. If you don't go out more often, you might fall ill

6. Unless you aren't absent from school, you have to write a sick-note

7. If the seas isn't warmer, the ice at the North and South pole will not melt

TYPE 2

1. If they weren't absent now, they would meet the head master

2. If he didn't clean up the car now, his boss could ask him to do this

3. Unless I known the number, I would not ring her up

4. Unless Peter studied hard, he could not get good marks

5. Unless my sister had a terrible headache, she wouldn't be absent from her class

6. If he didn't refuse everything, he would lose his family

7. If I didn't save my money, someone would take it

TYPE 3

1. If you hadn't stayed at home yesterday, you wouldn't have enjoyed a delicious meal

2. If he hadn't been busy last night, he could have met his friends

3. Unless she had missed the bus, she wouldn't have been late

4. Unless he had been angry, he would have say something

5. Unless he had had time, he wouldn't have read this novel

6. If they hadn't been on the phone last night, they couldn't have known the big secrets

Note: If...not = Unless

Type 1:

1. Unless you study harder, you'll get bad mark.

2. If this man isn't a driver, he can't help you move by car.

3. Unless he practice writing everyday, he can't improve his writing skill.

4. If you don't return this book to the library today, you'll have to pay a fine.

5. If you don't go out more often, you might fall ill.

6. Unless you aren't absent from school, you have to write a sick-note.

7. If the seas isn't warmer, the ice at the North and South pole will not melt.

Type 3

1. If you hadn't stayed at home yesterday, you wouldn't have enjoyed a delicious meal.

2. If he hadn't been busy last night, he could have met his friends.

3. Unless she had missed the bus, she wouldn't have been late.

4. Unless he had been angry, he would have say something.

5. Unless he had had time, he wouldn't have read this novel.

6. If they hadn't been on the phone last night, they couldn't have known the big secrets.

Em mới học lớp 7, có gì sai sót mong được chỉ giáo ạ^^