Note:
Câu điều kiện loại 1:
[If + thì hiện tại đơn], [will + động từ nguyên mẫu]
Câu điều kiện loại 2:
[If + thì quá khứ đơn], [would + động từ nguyên mẫu]
Câu điều kiện loại 3:
[If + thì quá khứ hoàn thành], [would + have + V3/V-ed]
If not=Unless
1. If he didn't have to study for his exam, he could go out
2. If she weren't lazy, she could pass the exam.
3. If he pays me tonight, I will have enough money to buy a car.
4. If he didn’t smoke too much, he could get rid of his cough.
5. If she weren’t very shy, she would enjoy the party.
6. If she had a college degree, she would be employed
7.If she hadn’t walked to the meeting, she would have been late.
8.If you don't promise to return back, I won’t lend you.
9.If the weather hadn't been terrible we could put our trip
10.If Sally had not been absent from school on Friday, she would know what she has to do for homework.
11.Unless you like this one, I'll bring you another.
12.If Martin hadn't been very nervous, he wouldn't have failed his driving test last week.