be supposed to have done sth.本应该做了某事(但事实上没做)

　　be supposed to be doing sth.理应正在做某事

　　suppose还可作连词，相当于supposing，意为"如果，假设"。

[语境助记]:

(1)You are not supposed to take the books out of the room. 这些书不能拿出屋去。

(2)You are supposed to have finished the work by now. 这工作你现在应该已经完成了。

(3)You're supposed to be doing your homework，but you're out playing.

　　你本应该在做作业，可你却在外面玩。

4．My parents are astonished.我的父母很吃惊。

[归纳拓展]:

　　astonished adj.吃惊的；惊愕的

　　be astonished by/at...对......感到惊讶

　　be astonished to do sth对做某事感到惊讶

　　astonish vt.使十分惊讶

　　astonishing adj.令人惊讶的

　　astonishment n．惊讶

　　to one's astonishment使某人惊讶的是

注意：astonished表示"吃惊的"，常以人作主语；

　　　astonishing表示"令人惊讶的"，常以事物作主语。

[语境助记]:

(1)There were an astonishing number of applicants for the job.

　申请这份工作的人数多得惊人。

(2)I was astonished by/at the great progress that he had made.

我对他取得的重大进步感到很惊讶。

当堂检测：

1．这条河以前是清澈的。

The river __________ be clean.

2．我必须说，我为我儿子的成功而自豪。

I must say that I____________ my son's success.

3．他应该是乘坐五点钟的那班火车到这儿来。

He____________ arrive on the five o'clock train.

4．要么你到这儿来，要么我去你家，都由你决定。

______you'll come here ______ I'll go to your home. It's all up to you.

5．令我惊讶的是，她在我之前就到了那儿。

______________，she was there before me.

课后反思：

__________________________________________________________________________________________________________________________________________

课后训练

完形填空

It was a cool October evening. Excitement and family members __16__the hall. I was only a 7­year­old girl，but I was the center of __17__.Finally，after weeks of preparation，I would __18__all my hard work in a dance performance. Everything would be __19__- so I thought. I waited backstage all __20__in my black tights