Unit 10【核心语法】-2021-2022学年九年级英语链接教材精准变式练（人教版）

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核心语法 Unit 10

2021-2022 学年九年级英语链接教材精准变式练（人教版）

3. I don’t think sixteen-year-olds should be allowed to drive.（教材 P49 1a）

一、be supposed to 的用法

1. 当主语是人时

be supposed to 的主语是人时，意为“应该……”，用来表示劝告、建议、责任等。

We’re supposed to spread positive energy everywhere we go.

You are not supposed to enter the teachers’ office unless you are allowed to.

2. 当主语是事或物时

be supposed to 的主语是事或物时，意为“本该，本应”，用于表示某事本应该发生而没有

发生。

The meeting was supposed to take place on Tuesday, but we’ve had to put it off.

3. be supposed to do sth.的否定形式

be supposed to do sth.的否定形式为 be not supposed to do sth. ，意为“不应该做某事”，表

示命令或禁止。

You’re not supposed to talk loudly in class.

【拓展延伸】

(1) be supposed to have done 表示“本应该做某事（实际上没做）”，相当于 should have

done。

He was supposed to have arrived an hour ago.

(2) be supposed to 还可表示“被认为……；被相信……”。

The dolphins are supposed to be very clever.

二、be expected to 的用法

be expected to do sth. 意为“应该做某事”或“被期望做某事”，其表达的主观性比 be

supposed to do sth. 更强。

You’re expected to clean the house.

教材核心语法知识链接及典例解读

三、It is + adj. + to do sth. 的用法

It is + adj. + to do sth. 意为“做某事是……的”，其中 It 为形式主语，真正的主语是动词不

定式（短语）。

It is hard to solve this problem.

【拓展延伸】

在该结构中，有时在 to do sth.前加上 for/of sb.，

表示动词不定式（短语）的逻辑主语。其用法如下：

…, but it is worth the trouble if you want to understand another culture. (教材 P76 4b)

worth /wɜː(r)θ/ adj. 值得；有……价值（的）

worth 作形容词，常用搭配：

一、单项选择

1．It ________Mike an hour to fix up his bicycle yesterday.

A．cost B．paid C．spent D．took

2．It is difficult for a foreigner ________ Chinese.

A．write B．to write C．to be written D．written

综合提升变式练习

3．It takes Amy about twenty minutes ________ home every day.

A．to walk B．walk C．walk to D．to walk to

4．Is ________possible for us ________a foreign language well in a short time?

A．one; learn B．it; to learn C．that; to learn D．this; learning

5．They all think ________difficult ________them to work with that serious man.

A．that; for B．it’s ; of C．that; of D．it’s; for

6． ________ is said the we’ll have a school trip next month．

A．This B．One C．It

7．Mrs Gao often says, “I ________ one million smiles in my heart ________ one billion dollars

in my pocket.”

A．don’t like; but B．prefer; than C．would rather; than D．prefer; to

8．— ________ my son ________ my daughter likes long-running very much.

—That’s really cool. Did they join in the marathon race held in Huai’an on 18 April?

A．Neither; nor B．Either; or

C．Both, and D．Not only; but also

9．—________ you ________ to paying for everything through WeChat?

—Sure. It’s fast and easy.

A．Did; use B．Are; use C．Do; get used D．Are; get used

10．—Nowadays, many young people get used to________ late every day.

—Exactly. But that’s not a good habit.

A．stay up B．staying up C．stay out D．staying out

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