Use UNLESS instead of IF:

1. If she doesn;t hurry, she'll be late

2. If we had more rain, our crops would be better

3. If you don't like this one, I'll bring you another

4. If you are not careful, you'll cut yourself with that knife

5. I'll be able to do any work if I do now have a quiet room

6. The flood would have been ruined if the flood had risen higher

7. If you hadn't sneezed, he wouldn't have known that we were there

8. If she did her hair differently, she would look quiet nice

9. If John had played for our football team, we would not have lost the game

10. If I won the first prize in a lottery, I'd give up my job

`1.` Unless she hurries, she'll be late.

`2.` Unless we had more rain, our crops wouldn't be better.

`3.` Unless you like this one, I will bring you another.

`4.` Unless you are careful, you'll cut yourself with that knife.

`5.` I won't be able to do any work unless I have a quiet room.

`6.` The flood wouldn't have been ruined unless the flood had risen higher.

`7.` Unless you had sneezed, he wouldn't have known that we were there.

`8.` Unless she did her hair differently, she wouldn't look quite nice.

`9.` Unless John had played for our football team, we would have lost the game.

`10.` Unless I won the first prize in a lottery, I wouldn't give up my job. 

`---------------------`

`-` Ta có: Unless `=` If ... not `:` Nếu ... không ...

`-` Cấu trúc câu điều kiện loại `1:`

`->` If `+` S `+` am/is/are `+` N/Adj `+` ..., S `+` can/should/will `+` V-inf 

`->` If `+` S `+` V(s/es)`/`don't/doesn't + V-inf, S `+` will/can/should `+` V-inf 

`+` Mệnh đề If: S `+` V(present simple `-` HTĐ)

`+` Mệnh đề chính: S `+` will/can/should `+` V-inf

`->` Dùng để dự đoán một hành động, sự việc có thể xảy ra trong tương lai.

`-` Unless với câu điều kiện loại `1` dạng động từ tobe:

`->` Unless `+` S `+` am/is/are `+` N/Adj, S `+` will/can/should `+` V

`-` Với động từ thường: Unless `+` S `+` V(s/es), S `+` will/can/should `+` V

`-` Cấu trúc câu điều kiện loại `2:`

`->` If `+` S `+` were`/`Ved/C2`/` didn't `+` V, S `+` would/could `+` V-inf 

`+` Mệnh đề If: S `+` V (past simple `-` QKĐ)

`+` Mệnh đề chính: S `+` would/could `+` V-inf

`->` Diễn tả `1` hành động, sự việc không thể xảy ra trong hiện tại hoặc tương lai.

`-` Unless với câu điều kiện loại `1` dạng động từ tobe:

`->` Unless `+` S `+` were `+` N/Adj, S `+` would/could/might `+` V

`-` Với động từ thường: Unless `+` S `+` Ved/C`2`, S `+` would/could `+` V

`@` Câu điều kiện loại `2` động từ tobe chỉ được dùng "Were".

`-` Cấu trúc câu điều kiện loại `3:` 

`->` If `+` S `+` had `+` PII, S `+` would/could `+` have `+` PII

`+` Mệnh đề If: S `+` V (past perfect `-` QKHT)

`+` Mệnh đề chính: S `+` would/could `+` have `+` V3/ed

`->` Diễn tả một hành động, sự việc đã không xảy ra trong quá khứ.

`-` Unless với câu điều kiện loại `1` dạng động từ tobe:

`->` Unless `+` S `+` had been `+` N/Adj, S `+` wi `+` would/could `+` have `+` PII

`-` Với động từ thường: Unless `+` S `+` had PII, S `+` would/could have `+` PII

1. Unless she hurry, ...

2. Unless we didn't have more rain,...

3. Unless you like this one,...

4. Unless you are careful,...

5. I'll be able to do any work unless I don't now have a quiet room

6. The flood would have been ruined unless the flood hadn't risen higher

7. Unless you had sneezed,...

8. Unless she didn't do her hair differently,...

9. Unless John hadn't played for our football team,...

10. Unless I didn't win the first prize in a lottery,...

--------------------------

- unless = if ... not

`***` Câu điều kiện:

- loại 1: If  + S + V(s/es) + O, S + will/model verbs + V_inf  + O

- loại 2: If + S + V2/ed + O, S + would/could+ V_inf + O
- Loại 3: If + S + had + V3/ed + O, S + would/could + have + V3/ed + O