4. I don’t know his address. I can’t give it to you.  If _________________________________________________________ 6. Unless she studies hard, he will fail the exam.  If ____________________________________________________________ 7. Go away or I will call the police.  If ____________________________________________________________ 9. If you don’t finish your exercises, you can’t go to bed.  Unless_________________________________________________________ 13. I only come if they invite me. –> Unless………………………. 1. Keep silent or you’ll wake the baby up. →If ……………………………………………..…..……… 2. Stop talking or you won’t understand the lesson.→ If …………………………………….....….……. 3. I don’t know her number, so I don’t ring her up.→ If …………………………………….....….…….. 4. I don’t know the answer, so I can’t tell you.→ If …………………………………………….……….. 5. Peter is fat because he eats so many chips. →……………………………………………………...….. 1. If you do not like this one, I’ll bring you another Unless……………………………………………… 2. If she does not hurry, she’ll be late Unless ………………………………………………. 3. If you are not careful, you’ll cut yourself Unless …………………………………………………… 4. if you had not sneezed, he wouldn’t have known that we were there. Unless …………………………………………………… 1. He can’t go out because he has to study for his exam. => If………………………………………………….. 2. She is lazy so she can’t pass the exam. If………………………………………………………… 3. He smokes too much; that’s why he can’t get rid of his cough. => If…………………………………………………………….. 4. She is very shy, so she doesn’t enjoy the party. => If…………………………………………………………….. 5. He doesn’t take any exercises. He is so unhealthy => If………………………………………………………………. 6. We can’t get the ticket because I don’t have the right change. => If……………………………………………………………….. 7. Study hard or you won’t pass the exam. => If………………………………………………………………….. 8. Don’t be impatient or you will make mistakes. => If……………………………………………………………………..

`4.` If I knew his address, I could give it to you.

`6.` If he studies hard, he won't fail the exam.

`7.` If you don't go away, I will call the police.

`9.` Unless you finish your exercises, you can't go to bed.

`13.` Unless they invite me, I won't come.

`1.` If you don't keep silent, you'll wake the baby up.

`2.` If you don't stop talking, you won't understand the lesson.

`3.` If I knew her number, I would ring her up.

`4.` If I knew the answer, I could tell you.

`5.` If Peter didn't eat so many chips, he wouldn't be fat.

`1.` Unless you like this one, I'll bring you another.

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

`3.` Unless you are careful, you'll cut yourself.

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

`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 didn't smoke too much, he could get rid of his cough.

`4.` If she weren't very shy, she would enjoy the party.

`5.` If he took some exercises, he wouldn't be so unhealthy.

`6.` If I had the right change, we could get the tickets.

`7.` If you study hard, you will pass the exam.

`8.` If you are impatient, you will make mistakes.

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

`-` Cấu trúc câu gốc:

`->` V/be (HTĐ) `+` O `+` or/and `+` S `+` V(HTĐ/TLĐ) `+` ...

`->` Vì câu gốc diễn tả sự việc có thể xảy ra ở tương lai. Nên ta sử dụng câu điều kiện loại `1.`

`=` Cấu trúc câu điều kiện loại `1:`

`->` If `+` S `+` am/is/are `+` N/Adj `+` ..., S `+` can/should/will (not) V

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

`+` 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 ở hiện tại hoặc tương lai.

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

`-` Với động từ tobe: Unless `+` S `+` am/is/are N/Adj, S `+` will/can/should (not) V

`-` Với động từ thường: Unless `+` S `+` V(s/es), S `+` will/can/should (not) V

`-` Cấu trúc câu gốc: 

`->` S `+` V(HTĐ) `+` because `+` S `+` V(HTĐ)

`-` Because: Bởi vì, vì `+` dùng để chỉ nguyên nhân `-` kết quả

`->` S `+` V(HTĐ) `+` ,so `+` S `+` V(HTĐ)

`-` So: Vì vậy, vậy nên `+` mệnh đề kết quả.

`=` Cấu trúc câu điều kiện loại `2:`

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

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

`+` Mệnh đề chính: S `+` would/could (not) `+` V-inf

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

`-` Cấu trúc câu gốc: 

`->` S `+` V(QKĐ) `+` because `+` S `+` V(QKĐ)

`-` Because: Bởi vì, vì `+` dùng để chỉ nguyên nhân `-` kết quả

`->` S `+` V(QKĐ) `+` ,so `+` S `+` V(QKĐ)

`-` So: Vì vậy, vậy nên `+` mệnh đề kết quả.

`-` Cấu trúc câu điều kiện loại `3:` 

`->` If `+` S `+` had `+` Ved/C3, S `+` would/could (not) `+` have `+` V3/ed

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

`+` Mệnh đề chính: S `+` would/could (not) `+` have `+` V3/ed

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

`@` Cấu trúc đảo ngữ câu điều kiện `1`, `2` và `3:`

`-` Câu đảo ngữ điều kiện loại `1:`

`->` Should `+` S `+` (not) be/V-inf `+` ..., S `+` will/can/should `+` V-inf

`-` Câu đảo ngữ điều kiện loại `2:`

`->` Were `+` S `+` Adj/N/to V-inf, S `+` would/could/might `+` V

`-` Câu đảo ngữ điều kiện loại `3:`

`->` Had `+` S `+` PII, S `+` would/could/might `+` have `+` PII