It may/could/must have been, etc

A Introduction

Vicky, Emma and Matthew are at a club in town.

Vicky: Where's Daniel? He should have been here half an hour ago.

Emma: He may have got lost. It isn't easy to find this place.

Matthew: He could have forgotten all about it, I suppose.

Emma: He can't have forgotten. We were talking about it this morning.

Matthew: Well, something must have delayed him.

We can use a modal verb with the perfect (have + a past participle).

We use this structure to talk about possible past events.

B May have, might have and could have

We use these forms to say that possibly something happened in the past. He may have got lost. (= Perhaps he has got lost.) You might have left your keys at work. (= Perhaps you left them at work.) Someone could have stolen them. (= It is possible that someone stole them.)

We also use could have for an opportunity that we didn't take or a possible result that didn't happen. We could have gone out somewhere, but we were too tired. You were very lucky. There could have been a terrible accident.

Daniel may not have caught the bus. I expect he

missed it.

(Perhaps he didn't catch it.) 7 might not have locked the door. (Perhaps I didn't lock it.)

Must have and can't have

Must and can't are opposites.

MUST HAVE

My watch says it's only ten past two. It must

have stopped.

I realize it is certainly true that my watch has stopped.

COULDN T HAVE

It is impossible that something happened. Daniel couldn't have caught the bus. It doesn't

run on Sundays.

(It is impossible for him to have caught the bus.)

CAN T HAVE

You've only spent five minutes on that job. You

can't have done it properly. I realize it is impossible that you did the job properly.

Should have and ought to have

We use these forms when someone didn't do the right thing. We didn't play very well We should have played better. I got lost. ~ Sorry. I ought to have drawn you a map. It was a lovely old building. They shouldn't have knocked it down.

29A Will have done 46 May, might, could, must, can't 48C Needn't have 49 Should, ought to 146 Would have

53 Exercises

It may/could/must have been, etc (B-D)

Look at each conversation and choose the best sentence, a) or b).

► Has the car broken down? ~ Well, we may have run out of petrol.

a) I'm sure there's no petrol left, b) I think there's no petrol left.

1 You could have had a free holiday. ~ Yes, we could, but the dates weren't convenient.
a) We had a free holiday, b) We didn't have a free holiday.

2 Did you record the programme? ~ I can't remember. I might not have done.
a) I'm not sure if I recorded it. b) I certainly didn't record it.

3 Can't you find that newspaper? ~ No, someone must have thrown it away.

a) It was necessary to throw it away, b) I realize now that it was thrown away.

Should and ought to (E and Unit 49B)

Complete the replies. Use should/ought to or should have/ought to have.

► Rita: Tom's car was stolen. He hadn't locked it.

David: I suppose it's his fault then. He should have locked it.

► Tom: I can't sleep sometimes. My neighbours play music all night.
Melanie: That's a nuisance. They shouldn't play music all night.

1 Mark: The picnickers left litter everywhere.

Sarah: That's awful....................................................................

2 Emma: Jessica isn't very friendly, is she? She never says hello to people.
Matthew: I know.

3 Rachel: I don't think Daniel's going to get that job. He was late for the interview.
Natasha: That can't have looked very good. ........................................................................

4 Daniel: Did you see Vicky crossing the road? She didn't look.

Emma: She could have been killed.......................................................................................

3 It may/could/must have been, etc (B-E)

Complete the conversation. Use cant have, might have, must have and shouldn't have. Harriet: There's a parcel outside. The postman (>)must have left (leave) it.

Mike: Well, (1) ...................................................... (he/ leave) it outside. He isn't supposed to do that.

Someone (2)…………………………………….. (take) it. Why didn't he ring the bell?

Harriet: He always rings. (3).................................................. (you / be) out when he came.

Mike: I haven't been out. So (4)............................................................ (he / ring) the bell.

4 It may/could/must have been, etc (B-E)

Complete the sentences. The second person agrees with the first. Use might have, couldn't have, etc.

► Matthew: I'm sure the computer didn't make a mistake. That's impossible.

Emma: No, of course the computer couldn't have made a mistake.

1 Mark: I can't see the letter here now. So clearly someone posted it.
Alan: Yes, .........................................................................................................

2 Natasha: It's possible Emma didn't hear the alarm.
Rachel: Well, I suppose .......................................................

3 Sarah: Henry drove at 100 miles an hour. Don't you think that's dangerous?
Mark: Yes, I do...............................................................................................................

4 Daniel: I just don't believe that Andrew has failed the exam.

Vicky: Andrew? Impossible! ................................................................................

Modal verbs (Units 44-53)

Test 10A

Decide which word is correct.

► Could I have some more tea, please?

a) Could b) Shall c) Will d) Would

1 Everyone's asleep. We…………….. make a noise.
a) couldn't b) mustn't c) needn't d) wouldn't

2 you like to go for a ride with us?
a) Do b) Should c) Will d) Would

3 I wonder if this is the right way. lt ..... notbe.

a) can b) could c) might d) must

4 I don't think I want to see this film. ~ Oh, I think you…………….. enjoy it.
a) can b) shall c) will d) would

5 I'm quite happy to walk. You .......... drive me home.

a) don't b) haven't c) mustn't d) needn't

6 1 show you the way? ~ Oh, thank you.
a) Do b) Shall c) Will d) Would

7 It's late. I think we ................... better go.

a) had b) have c) should d) would

8 We all tried to push the van, but it…………….. move.
a) can't b) couldn't c) won't d) wouldn't

Test 10 B

Some of these sentences are correct, and some have a word which should not be there. If the sentence is correct, put a tick (/). If it is incorrect, cross the unnecessary word out of the sentence and write it in the space.

? I won't be able to come to the meeting. /

? We didn't needn't have watered the garden because it's raining, didn't

1 Would you like to be in the team?

2 Did people have to bring their own sleeping-bags?

3 I could to ski when I was quite young.

4 Would you mind for checking these figures?

5 We may be go swimming tomorrow.

6 1 knew that I would be sorry later.

7 If you had fallen, you could have been hurt yourself.

8 We're not supposed to use this entrance.

9 You don't have to do all the work yourself.

10 Anna wasn't be allowed to take photos.

Test 10C

Write a second sentence so that it has a similar meaning to the first. Use the word in brackets.

► Perhaps Susan knows the address, (may)
Susan may know the address.

1 We should be careful, (ought)

2 I managed to finish all my work, (able)

3 I realize that it was a terrible experience for you. (must)

4 It's against the rules for players to have a drink, (allowed)

5 The best thing for you to do is sit down, (better)

6 The report must be on my desk tomorrow morning, (has)

7 It is possible that Joanne did not receive my message, (might)

8 It's impossible for Martin to be jogging in this weather, (can't)

9 Tessa wants a cup of coffee, (like)

10 It was not necessary for Nancy to clean the flat, (didn't)

Test 10D

Say what the speaker is doing. After each sentence write one of the phrases from the box.

asking for advice giving an order making a suggestion refusing permission

asking permission inviting offering food

expressing a wish making a request offering to help

► Will you have a piece of cake? offering food

1 May I sit down?

2 You must report to me every day.

3 What jobs should I apply for?

4 Would you like to spend the day with us?

5 Shall I do the washing-up?

6 Shall we sit outside?

7 I'm sorry. You can't park here.

8 Could you fill in this form, please?

9 We really must have a nice big party.

Test 10 E

Here is some information for visitors to New York City. Write the missing words. Use one word only in each space.

Before you travel to the US, you (►) must find out what documents you need. British people do not

(1)……………………….. to get a visa, but there are different rules for different nationalities. For example, you

(2)............................ need to show that you have enough money with you. But there's one rule you can
be sure about: everyone (3)………………………... to show their passport. The roads in New York are very
busy, but don't worry - you (4)……………….. get around cheaply and easily by subway. Remember
that you are not (5)………………… to smoke on public transport or in shops. And don't forget either
that you are (6) ……………………. to tip taxi drivers and waiters. New York is not the most dangerous city
in the US, but you really (7) …………..... walk along empty streets at night. And it is safer if you are
(8) .................. to travel around in a group.

Date: 2014-12-22; view: 2634