Ta áp dụng cấu trúc should/shouldn't để đưa ra lời khuyên
`->`Cấu trúc:S+Should/shouldn't +V (bare)+.....
Tham khảo:
1. You shouldn't eat too much
2. You shouldn't wear earphones everywhere in bed
3. You shouldn't watch TV too much
4. The children shouldn't go alone
5. You shouldn't go to school late
6. You shouldn't drink too much coffee in the evening
7. You shouldn't break things
8. You shouldn't smoke in the hospital.
9.You shouldn't fight with your friend
10.You shouldn't  play with a knife 

Câu trúc câu should (ĐTKT):

`text{(+) S + should + VinF + (O)`

`text{(-) S + shouldn't + VinF + (O)`

`text{(?) Should + S + VinF + (O)?`

`4` Câu đặt được:

`-` You shouldn't eat much candy.

Tạm dịch: Bạn không nên ăn nhiều kẹo.

`-` You shouldn't play with fire.

Tạm dịch: Bạn không nên chơi với lửa.

`-` You shouldn't ride a bike very fast.

Tạm dịch: Bạn không nên đi xe đạp quá nhanh

`-` You shouldn't speak loudly in hospital.

Tạm dịch: Bạn không nên nói to trong bệnh viện.