1. Her room is very dirty. (clean it every day)

She ought to clean it every day.

2. I play tennis badly. (practice tennis more regularly)

You ought to practice tennis more regularly.

3. My father has a sore throat. (not smoke so much)

He ought not to smoke so much.

4. Nam feels very tired. (go to bed early)

Nam ought to go to bed early.

5. He had an accident last week. (not drive so fast)

He ought not to drive so fast.

6. I catch flu. (stay in bed)

You ought to stay in bed.

7. Hoa feels sleepy. (not stay up late)

Hoa ought not to stay up late.

8. His shirt is very old. (buy a new one)

He ought to buy a new one.

Đây nha bạn, chúc thi tốt !!

1.her room is very dirty(clean it every day)

=> She ought to clean it every day

2.I play tennis badly(practice tennis more regularly)

=> You ought to practice tennis more regularly.

3.my father has a sore throat (not smoke so much)

=> He ought not to smoke so much.

4. Nam feels very tired (go to bed early)

=> He ought to go to bed early.

5.he had an accident last week (not drive so fast)

=> He ought not to drive so fast.

6.I catch flu (stay in bed)

=> You ought to stay in bed.

1.her room is very dirty(clean it every day)

=> She ought to clean it every day

2.I play tennis badly(practice tennis more regularly)

=> You ought to practice tennis more regularly.

3.my father has a sore throat (not smoke so much)

=> He ought not to smoke so much.

4. Nam feels very tired (go to bed early)

=> He ought to go to bed early.

she's not very well.Perhaps she.....see a doctor

a.must b. ought to c.must not d.shouldn't

jane's flight is at 6am tomorrow.she..........leave home at 4am in order to do check-in

a have to b ought not to c have to d either B or C

1. You should go to bed early.

2. You shouldn't eat too mant candies.

3. You ought to study harder.

4. You ought not to be lazy.

5. You had better to go to the doctor.

Chúc em học tốt!!!

shouldn't

ought to

should

mustn't 

ought to

have to

must

mustn't

mustn't 

don't have to

1.I....could.....(can/could) swim when i was 10
2.You....ought....(ought/should) to study harder if you want to get good marks
3.It's going to rain.You.....ought to....(ought to/can) take an umbrella with you
4.The building is burning.We....must....(can/must) get out of it now
5.I ....can't....(can't/ couldn't) dance now but i could dance very well when i was 7
6.You....should...(should/ought to) not stay up late.It's harmful to your health
7.He....ought not to....(ought not to/can’t) drive too fast.It’s dangerous
8.I....must.....(can’t/must) finish my assignment today or i will be punished

1/ Write these sentences use ought or ought not to

Ex1: I have a headache (see a doctor)

You ought to see a doctor

Ex2: His stomach is aching. (not eat green fruit)

He ought not to eat green fruit.

a) Her room is very dirty. (clean it everyday)

-> She ought to clean it everyday

b) I play tennis badly (practice tennis more regularly)

-> I ought to practice tennis more regularly

c) Nam feels very tired. (go to bed early)

-> Nam ought to go to bed early

d) My father has a score throat. (not smoke so much)

-> My father ought not to smoke so much

e) Hoa feels sleepy. (not stay up late)

-> Hoa ought not to stay up late

must: phải làm gì (theo mong muốn của chủ thể)

have to: phải làm gì (theo mong muốn của người khác, chủ thể có phần bị thúc ép)

ought to: nên làm gì (sự khuyên bảo theo quy chuẩn xã hội; vd: You ought to obey your parents.)

Như vậy, khi muốn nói về những điều cần phải làm trùng với mong muốn chủ thể thì dùng must, nếu không trùng với mong muốn của chủ thể thì dùng have to. Ought to dùng khi diễn đạt lời khuyên, gợi ý theo quan điểm chung của xã hội.

Thân mến phản hồi đến em!