4. What are the rules for using mobiles at your school? Write sentences with must, mustn't and needn't and the phrases below. If you can, add ideas of your own.

(Những luật lệ cho việc sử dụng điện thoại ở trường của bạn là gì? Viết các câu với must, mustn’t và needn’t với các cụm từ bên dưới. Nếu có thể, hãy thêm vào ý tưởng riêng của bạn.)

Using mobiles

bring our mobiles to school

leave them in our bags

put them on our desk during lessons

keep them on silent all day

send texts during lessons

3. Read the Learn this! box and complete the rules. Use must, mustn't, needn't and don't have to. Use your answers to exercise 2 to help you.

(Đọc hộp Learn this! và hoàn thành các quy tắc. Dùng must, mustn't, needn't and don't have to. Sử dụng các câu trả lời trong bài 2 để giúp bạn.)

LEARN THIS! must, mustn't and needn't/ don't have to

a. We use (1) _____ to say that something is necessary or very important to do.

b. We use (2) _____ and (3) _____ to say that something is not necessary.

c. We use (4) _____ to say that something is prohibited (a negative order)

Note: We can also use passive forms after modal verbs.

Helmet must be worn at all times.

Read a situation and write a sentence with " must have or couldn't have + V__3/ed " . Use the words in brackets

Vd : That dress you bought is very good quality. (It must / be / very expensive ) 

-> It must have been very expensive 

1) I haven't seen Jim for ages ( He must / go away ) 

2) I wonder where my umbrella is ( You must / leave it on the rain ) 

3) Don passed the examination. He didn't study very much on it ( The exam couldn't / be / very difficult )

4) She knew everything about our plans ( She must / listen / to our conversation ) 

5) Dennis did the opposite of what I asked him to do ( He couldn't / understand / what I said )

6) When I woke up this morning, the light was on ( I must / forget / turn it off ) 

7) I don't understand how the accident happened ( The drive couldn't / see / the red light )

8) The phone rang but I didn't hear it ( I must / be / asleep )

9) She passed me in the street without speaking ( She couldn't / see / me ) 

I. Choose the correct answer from A,B,C or D to complete each sentence below.(1,0pt)

1. You must learn the____________ of the game before playing. 

A. rules B. laws C. agreements D. sayings

2. Hanh is usually early _________ school because she gets up early.

A. on B. for C. at D. to

3. We usually play football in the winter   _____________ it is cold.

A. when B. where C. so D. time

 4. “What would you like to drink now ? “  - “ _____________.”

A. No, thank you B. Yes, please C. I like to do nothing D. Orange juice, please 

5. If you read more, your vocabulary will get   ____________ every day.

A. good B. well C. better D. best

6. Would you like me to turn off your computer? ” “-  _________ . I’ll do it myself ”

A. No, thanks B. Yes, please C. Don’t do it D. Of course

7. ___________ do you go to the library? – Every weekend.

A. How B. How much C. How many times D. How often

8. “I’ve just received a scholarship.”  “- ___________ ! ”. 

A. Really B. Thank you C. Congratulations D. Well

9. I don’t want much sugar in coffee. Just______________, please.

A. a little B. little C. a few D. few

10. __________ eat too much salt. It’s not good for you.

A. Do B. Don’t C. Please D. Can’t