B Examples

1 I don't think so. She can't be Italian. She must be Greek.

2 I don't think so. He can't be English. He must be American.

3 I don't think so. They can't be Canadian. They must be Australian.

7 I don't think so. He can't be twenty-four. He must be thirty.

15 I don't think so. It can't be easy. It must be difficult.

18 I don't think so. He can't be reading. He must be sleeping.

19 I don't think so. They can't be listening to the radio. They must be watching television.

20 I don't think so. She can't be retiring. She must be looking for a new job.

Lesson 130 He can't have been …/He must have been …

He can't have been ill.

He must have been tired.

It can't have been my new hat.

It must have been my old one.

She can't have been Danish.

She must have been Swedish.

He can't have been a dentist.

He must have been a doctor.

She can't have been forty.

She must have been fifty.

It can't have been the 20th.

It must have been the 21st.

He can't have been the youngest.

He must have been the oldest.

He can't have been reading.

He must have been sleeping.

Exercises

had to的后边只能跟动词的原形，must have been后可以跟形容词，名词和动词的-ing形式。

I must have been tired at that time.

He must have been a manager.

He must have been driving at 100 kilometers an hour.

1 must have been

2 had to

3 must have been

4 had to

5 had to

6 must have been

B Example

1 I don't think they were. They can't have been Canadian. They must have been Australian.

2 I don't think she was. She can't have been Finnish. She must have been Russian.

5 I don't think she was. She can't have been a dentist. She must have been a doctor.

9 I don't think he was. He can't have been seventy-six. He must have been over eighty.

16 I don't think she was. She can't have been old. She must have been young.

18 I don't think they were. They can't have been listening to the radio. They must have been watching television.

19 I don't think she was. She can't have been retiring. She must have been looking for a new job.

20 I don't think they were. They can't have been sitting. They must have been standing.

Lesson 132 He may be …/He may have been … I'm not sure

Where is Harry?

He may be in his room.

I'm not sure.

Where will he go?

He may go to the cinema.

I'm not sure.

Why is he late?

He may be busy.

I'm not sure.

What is he doing?

He may be reading.

I'm not sure.

Why was he late?

He may have been busy.

I'm not sure.

What was he doing?

He may have been reading.

I'm not sure.

B Examples

1 I'm not sure. They may be Australian.

2 I'm not sure. She may be Russian.

3 I'm not sure. They may be Chinese.

4 I'm not sure. They may have been bakers.

5 I'm not sure. She may have been a doctor.

10 I'm not sure. She may have been under fifty.

17 I'm not sure. He may have been tired.

18 I'm not sure. They may be watching television.

19 I'm not sure. She may have been looking for a new job.

20 I'm not sure. They may be standing.

Lesson 127 A famous actress

[词汇·略]

be famous for/ be famous as

She is famous for her beauty.

He is famous as a writer.

She is a famous actress.

She is famous.

at most

I read she was only 29.

[课文]

Karen Marsh

recognize

Can you recognize that woman?

I think I can.

She must be Karen Marsh.

I think so.

I thought so.

A man is sitting beside her.

Who's sitting beside her?

Who's the man beside her?

He must be Conrad Reeves.

He can't be.

I think you're right.

He is her third husband.

He isn't her third husband.

Isn't he her third husband?

No. He must be her fourth or fifth.

Karen Marsh looks old.

Karen Marsh doesn't look old.

Doesn't Karen Marsh look old!

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