新概念英语智慧版第一册Lesson 128 He can’t b

Lesson 128 He can’t be...他不可能......He must be...他肯定是......

一.Look,listen and repeat.

看图听录音，然后练习。

1

Is he ill or tired?

He can’t be ill.He must be tired.

2

Is it your new hat or your old one?

It can’t be my new hat.It must be my old one.

3

Is she Danish or Swedish?

She can’t be Danish.She must be Swedish.

4

Is he a dentist or a doctor?

He can’t be a dentist.He must be a doctor.

5

Is she forty or fifty?

She can’t be forty.She must be fifty.

6

Is it the 20th or the 21st today?

It can’t be the 20th.It must be the 21st.

7

Is he the youngest or the oldest of all the children?

He can’t be the youngest.He must be the oldest.

8

Is he reading or sleeping?

He can’t be reading.He must be sleeping.

二.Written exercises书面练习

A  Rewrite these sentences，using either has to or I think he is probably...

模仿例句，使用has to或I think he is probably...改写以下句子。

Examples:

He must be home before six o’clock.

He has to be home before six o’clock.

He must be tired.

I think he is probably tired.

1.He must be here at six o’clock.

He has to be here at six o’clock.

2.He must be busy.

I think he is probably busy.

3.He must be at the office early tomorrow.

He has to be at the office early tomorrow.

4.He must be sleeping.

I think he is probably sleeping.

5.He must be French.

I think he is probably French.

6.He must be in France next week.

He has to be in France next week.

7.He must be an engineer.

I think he is probably an engineer.

B Write new sentences.

模仿例句改写以下句子。

Example:

I think she’s Danish.(Swedish)

I don’t think so.She can’t be Danish.

She must be Swedish.

1.I think she’s Italian.(Greek)

I don’t think so.She can’t be Italian.

She must be Greek.

2.I think he’s English.(American)

I don’t think so.He can’t be English.

He must be American.

3.I think they’re Canadian.(Australian)

I don’t think so.They can’t be Canadian.

They must be Australian.

4.I think he’s a mechanic.(engineer)

I don’t think so.He can’t be a mechanic.

He must be an engineer.

5.I think he’s a bus conductor.(bus driver)

I don’t think so.He can’t be a bus conductor.

He must be a bus driver.

6.I think he’s a sales rep.(the boss)

I don’t think so.He can’t be a sales rep.

He must be the boss.

7.I think he’s twenty-four.(thirty)

I don’t think so.He can’t be twenty-four.

He must be thirty.

8.I think they’re five.(seven)

I don’t think so.They can’t be five.

They must be seven.

9.I think he’s seventy-six.(over eighty)

I don’t think so.He can’t be seventy-six.

He must be over eighty.

10.I think she’s fifty-five.(under fifty)

I don’t think so.She can’t be fifty-five.

She must be under fifty.

11.I think it’s the 21st today.(20th)

I don’t think so.It can’t be the 21st today.

It must be the 20th today.

12.I think it’s Tuesday today.(Wednesday)

I don’t think so.It can’t be Tuesday today.

It must be Wednesday today.

13.I think it’s the 2nd today.(3rd)

I don’t think so.It can’t be the 2nd today.

It must be the 3rd today.

14.I think it’s cheap.(expensive)

I don’t think so.It can’t be cheap.

It must be expensive.

15.I think it’s easy.(difficult)

I don’t think so.It can’t be easy.

It must be difficult.

16.I think she’s old.(young)

I don’t think so.She can’t be old.

She must be young.

17.I think they’re early.(late)

I don’t think so.They can’t be early.

They must be late.

18.I think he’s reading.(sleeping)

I don’t think so.He can’t be reading.

He must be sleeping.

19.I think they’re listening to the radio.(watching television)

I don’t think so.They can’t be listening to the radio.

They must be watching television.

20.I think she’s retiring.(looking for a new job)

I don’t think so.She can’t be retiring.

She must be looking for a new job.