D => must not

A => tell

A => don't have to

chew => chewing

C -> many generations

1.We have a lot of work tomorrow .You must be late!

2.You mustn’t to tell anyone what I just told you. It’s a secret.

3. We have to rush. We’ve got plenty of time.

4.When chew food, we shouldn’t talk.

5. My family has followed this tradition for many generation. - It’s good .

1. D  mustn't 

2. A  tell

3. A  don't have to

4. B  chewing

5. C  generations

Rewrite these sentences, using must, mustn’t, should, shouldn’t.

1. It’s good for you to take exercise every day.

→  You should take exercise every day.

2. It’s a good idea to listen to the weather forecast before going camping.

→  You should listen to the weather forecast before going camping.

3. It’s not good to eat lots of sweets.

→  You shouldn't eat lots of sweets.

4. It’s not a good idea to swim immediately after a meal.

→  You shouldn't swim immediately after a meal.

5. Be quiet in class and don’t chat to your friends!

→  You must be quiet in class and mustn't chat to your friends!

Rewrite these sentences, using must, mustn’t, should, shouldn’t.

1. It’s a good for you to take exercise every day.

→  You should take exercise every day.

2. It’s a good idea to listen to the weather forecast before going camping.

→  You should listen to the weather forecast before going camping.

3. It’s not good to eat lots of sweets.

→  You shouldn't eat lots of sweets. 

4. It’s not a good idea to swim immediately after a meal.

→  You shouldn't swim immediately after a meal.

5. Be quiet in class and don’t chat to your friends!

→  You should be quiet in class

1. The question can be answered.

2. The box would be carried.

3. The window should be opened.

4. Cards might be played.

5. The car ought to be washed.

6. The form must be filled in.

7. Could the dog be fed?

8. Could the door be locked by Jenny?

1. I can be answered the question.

2.she could be carried the box

3.you should be opened the window 

4 we might be played cards

5. you ought to be washed the car

6. he must be filled in the form.

7 . could you be fed the dog ? 

8 could jenny locked the door?

1.              You ______shouldn't__      stay up too late because it’s not good for your health.

2.              No one ____shouldn't____    be late for school tomorrow because we will have an exam.

3.              I think there ___should______    a garbage dump in front of the restaurant.

4.              You _____should______     go for a check-up regularly.

5.              I think you ___should______ be more careful.

6.              ___should_______     you have any questions, please write me an email.

7.              What _______should_____ I do to learn better?

8.              My father thinks that I _______shouldn't___    be so into computer games.

9.              The candidates___should______   be here before 10am, or they will be disqualified.

10.         You _____should__       learn about some cultural features of the country you are going to visit.

11.         Mary ______should_____take any pills before seeing the doctor.

12.         ______should____James apply for the job at this company? Yes, he should.

13.         How much time _______should___     I spend on this task?

14.         Old people ____shouldn't___           work too hard. They need an abundance of time to relax.

15.      Parents_____shouldn't____         let their children use smartphones at an early age.

. Complete the sentences with “should” or “shouldn’t”.

1.              You __shouldn't______      stay up too late because it’s not good for your health.

2.              No one ____shouldn't____    be late for school tomorrow because we will have an exam.

3.              I think there ____shouldn't_____    a garbage dump in front of the restaurant.

4.              You ____shouldn't_______     go for a check-up regularly.

5.              I think you ___should______ be more careful.

6.              _____Should_____     you have any questions, please write me an email.

7.              What _____should_______ I do to learn better?

8.              My father thinks that I _____shouldn't_____    be so into computer games.

9.              The candidates_____should____   be here before 10am, or they will be disqualified.

10.         You __should_____       learn about some cultural features of the country you are going to visit.

11.         Mary _____should______take any pills before seeing the doctor.

12.         _____should_____James apply for the job at this company? Yes, he should.

13.         How much time _should_________     I spend on this task?

14.         Old people _____shouldn't__           work too hard. They need an abundance of time to relax.

15.      Parents______shouldn't___         let their children use smartphones at an early age.

1. Did you hear me come in last night? – No, I must have been sleeping.
2. You helped him. (You helped him but he didn’t need help).
3. I wonder who broke the wineglass; it may have been the cat, for she was out all day.
4. He is back already. – He must have started very early.
5. I told him to turn left and he immediately turned right. – He may not have understood you.
6. The door was open.
- It must have been left open. I had locked it myself, and the key was in my pocket.
7. I’ve opened another bottle.
- You shouldn’t have done that. We've just only started this one.
8. I saw Ann in the library yesterday. You may not have seen her; she’s still abroad.
9. I’ve made two copies. You needn’t have made two. One would have been enough.
10. I had to get down the mountain in thick fog. – That must have been difficult.
11. We’ve sent for a doctor. – You needn’t have sent for him. I’m perfectly well.
12. He couldn’t have walked from here to London in two hours. It isn’t possible.
13. I had my umbrella when I came out, but I haven’t got it now. – You must have left it on the bus.
14. Why didn’t you wait for me yesterday? – I waited five minutes. – You should have waited a little longer.
15. Perhaps he swam across. – No, he can’t have done that; he can’t swim.

16. You would have a very good dinner if you only paid 3.
17. That carpet was entirely made by hand. – It must have taken a long time.
18. The machine said “You weigh 63 kg,” and I said, “Thank you.”
- You didn’t say anything.
19. I have just watered the roses.
– You needn’t have watered them. Look, it’s raining now.
20. A: I have finished.
B: But you were only halfway through when I went to bed. You must have worked all night.
21. A: I’ve written to Paul.
B: You needn’t have written to him. He’s coming here tomorrow. You’ll see him before he gets your letter.
22. I left my bicycle here, and now it’s gone. – Someone must have borrowed it.

I. Fill in the spaces in the following sentences with one auxiliary + perfect infinitive
( must, can’t, might, may, need, should….. + have PII)
1. Did you hear me come in last night. – No, I (sleep) .....must have slept.............. ...................
2. You (help) .............needn't have helped...... ................... him. (You helped him but he didn’t need
help).
3. I wonder who broke the wineglass; it (be) .......can't have been........... ................... the cat for she
was out all day.
4. He is back already. – He (start) ........must have started........... ................... very early.
5. I told him to turn left and he immediately turned right. – He (understand)
..........mustn't have understood......... you.
6. The door was open.
- It (be) ....mustn't have been............... ................... open. I had locked it myself and the key was in
my pocket.
7. I’ve opened another bottle.
- You (do) ......shouldn't have done............. ................... that. We've just only started this one.
8. I saw Ann in the library yesterday. You (see) ........can't have seen........... ................... her; she’s
still abroad.
9. I’ve made two copies. You (make) ..needn't have made................. ................... two. One would have
been enough.
10. I had to get down the mountain in a thick fog. – That (be) ........must have been...........
................... difficult.

11. We’ve sent for a doctor. – You (send) ..........needn't have sent......... ................... for him. I’m
perfectly well.
12. He (walk) ......may walk............. ................... from here to London in two hours. It isn’t
possible.
13. I had my umbrella when I came out but I haven’t got now. – You (leave)
................... ......might have left............. on the bus.
14. Why didn’t you wait for me yesterday? – I waited five minutes. – You (wait)
.........should have waited.......... ................... a little longer.
15. Perhaps he swam across. – No, he (do) .......mustn't have done............ ................... that; he can’t
swim.

16. We went to a restaurant and had a very good dinner for 3.
17. That carpet was entirely made by hand. – It (take) .........must have taken.......... ................... a long
time.
18. The machine said “you weigh 63 kg,” and I said “Thank you.”
- You (say) ...needn't have said................ ................... anything.
19. I have just watered the roses.
– You (water) .......needn't have watered............ ................... them. Look, it’s raining now.
20. A: I have finished.
B: But you were only half way through when I went to bed. You (work)
..................must have worked. ................... all night.
21. A: I’ve written to Paul.
B: You (write) ........needn't have written........... ................... to him. He’s coming here tomorrow.
You’ll see him before he gets your letter.
22. I left my bicycle here, and now it’s gone. – Someone (borrow) ...................
.........must have borrowed.......... it.