:))))))))))))))))))))))))))))))))))))))))))))

3. -> If you don't study hard, you will fail.

4. -> If you don't go to bed, you will late for school.

5. -> If you work hard, you will success.

6. -> If you don't take a rain coat, you will be caught in rain.

7. -> If Nga went to school everyday, she would become a hard-working student.

11. -> If you don't work hard, you will be punished.

12. -> If you don't keep silent, you will wake the baby up

13. -> If you don't stop talking, you won't understand the lesson.

14. -> If I don't have enough money to buy a car, he will pay me tonight.

15. -> If you are impatient, you will make mistakes.

+Cấu trúc: câu lệnh: Don't...

+Cấu trúc: lời khuyên: V+or+S+V 

VD: Study hard or...

Go to bed early or...

=> sử dụng điều kiện loại 1: 
If+S+V_HTĐ, S+will+V_nguyên thể...

+Câu 7 sử dụng thì hiện tại đơn

=> sử dụng điều kiện loại 2 (ko có thật ở HT): 
If+S+V_QKĐ, S+would+V_nguyên thể...