Complete these sentences with must (not) or (not) have to (correct form )

1) You really ........ work harder if you want to pass that examination

2) Many children in Britian ......... wear uniform when they go to school

3) Last night Don suddenly became ill. We ........ call the doctor

4) I can stay in bed tomorrow morning because I ......... work

5) What ever you do, you ......... touch that switch. It's very dangerous

6) Ann has ........... wear glasses since she was eight years old

7) I'm afraid I can't come tomorrow. I .......... work late

8) I'm sorry I couldn't come yesterday. I .......... work late

9) You .......... forget what I told you. It's very important 

10) Tom may ........ go away next week

11) We couldn't repair the car ourselves. We ........... take it to the garage 

12) She .......... get up so early. She gets up early because she prefers to

13) We ......... leave yet. We've got plenty of time 

14) When you come to London again, you ......... come and see us

15) I don't want anyone to know. You ......... tell anyone what I said 

Read the situation and decide what you want to say. Use modal verbs 

Vd : You have to carry some heavy boxes upstairs. Ask someone to help you

-> Could you give me a hand with these boxes ? 

1) You want your friend to show you how to change the film in your camera. What do you say to him/her ?

2) You're on a train. The woman next to you has finished reading her newspaper. Now you want to have a look at it. What do you say ?

3) You need a match to light your cigarette. You haven't got any but the man sitting next to you has some. What do you ask him ? 

4) There is a concert on tonight and you are going with some friends. You think Tom would enjoy it too. Invite him

5) You're in the post office. You want three stamps for Japan. What do you say ?

6) You're sitting in a crowded bus. There is an ola lady standing. Offer her your seat

7) You're in a car with a friend, who is driving. He is going to park the car but there is a NO PARKING sign. You see the sign and say...

8) A friend has just come to see you in your flat. Offer him something to drink

9) You are at the interview. You want to smoke a cigarette. What do you ask ? 

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 ) 

Complete these sentences with can / can't, could / couldn't or be able to ( correct form). Sometimes it is possible to use more than one modal verb 

1) Tom ........... drive but he hasn't got a car

2) I can't understand Martin. I've never ........... understand him

3) He had hurt his leg, so he .......... walk very well 

4) She wasn't at home when I phoned, but I .......... contact her at the office

5) I looked very carefully and I ......... see a figure in the distance 

6) I used to .......... stand on my head but I can't do it now

7) They didn't have any tomatoes in the first shop I went to, but I .......... get some in the next shop

8) My grandmother loved music. She ........... play the piano very well

9) Ask Ann about your problem. She should ............ help you

10) The boy fell into the river but fortunately we ........... rescue him 

Câu 1 : Cho I = ₀ʃ¹ x+1 / x² +2x+5 dx = 1/a ln b/c với a,b là số nguyên. Tính P = a+b

Câu 2 : Cho I = ₀ʃ¹ 3x+4 / 2x²-3x-5 dx = 23/14lna/b - 1/7lnc với a,b,c là số nguyên. Tính P=a-b+c

Câu 3 : Cho I = ₀ʃ^π/6 (2-x)sin3xdx = a/b với a,b là số nguyên tố cùng nhau. Tính giá trị của a

Biết ₁ʃ² lnx/x² dx = b/c + aln2 ( với a là số thực, b,c là số nguyên dương và b/c là phân số tối giản. Tính giá trị của 2a + 3b + c