进行时的应用what与that用法比较
1. 一个长动作作为背景，被一个短动作打断，长动作往往用进行时，短动作用一般时。如：
The students were writing busily when Miss Brown went to get a boo k she had left in the office. 
学生们正忙着写作，这时布朗小姐去拿她忘在办公室的书。
2. 表示动作的未完性、暂时性。如：
— Have you moved into the new house ? — 你搬进新房子了吗？
— Not yet. The rooms are being painted. — 还没有。房间正在粉刷。
3. 表示计划、安排要做的事。如：
— What were you doing when Tony phoned you ?
— I had just finished my work and was starting to take a shower. 
—托尼打电话给你时，你在干什么？

—我刚做完工作，正准备洗淋浴了。

速记英语单词
单词不用记
新概念英语青少版

4. 表示现在或当时发展中的或正在进行的情况。如：
I don’t think Jim saw me; he was just starting into space. 
我想吉姆没看见我，他刚开始进入太空。
I first met Lisa 3 years ago. She was working at a radio shop at the time.
我3年前第一次见到丽莎了。她当时在一家无线电商店工作。
— Hey, look where you are going !      — Oh, I’m terribly sorry, I wasn’t noticing. 
— 嘿，看看你要去哪里！ — 哦，我非常抱歉，我没有注意到。

what 与that 在名词性从句中用法比较
That Tom fell off his chair by accident got the classmates laughing.
汤姆偶然从椅子上摔下来把同学们都笑了。
What Tom learned in university helps him a lot in his job.
汤姆在大学里学到的东西对他的工作有很大帮助。
注：that 在从句中不作任何成分，what 在从句中必须担当主语或宾语。
We have reached what is called XinJie kou. 我们已经达到了新街口。

1. Parents are doing all they ________ to help their children achieve their ambitions.
A．shall              B．can   C．may                  D．need
2. We ________ take clean drinking water for granted. One day we may run out of it.
A．needn't            B．can't                  C．won't               D．shouldn't 
3. —Where did you get this book?
—I picked it up from a second¬hand bookshop if you ________  know.
A．must              B．will                    C．can                 D．shall
4. You _______ pay too much attention to your reading skill, as it is so important.
A. can not              B. shouldn’t                C. mustn’t             D. needn’t
5. I felt surprised that anyone of his intelligence ________ s uch an easy test. 
A．might have failed B．could have failed
C．should have failed D．must have failed
6： After the Shenzhou VI capsule（太空舱）touched down, two astronauts succeeded in traveling around the earth, thus        again China is a global space power. 
A. proving      B. to prove      C. to have proved  D. being proved
7： Silver is the best conductor of electricity, copper _______ it closely. 
A. followed      B. following      C. to follow    D. follows
8： Mr Jones, a new teacher, stood in front of the students, his body _______ with fear. 
A. trembling      B. trembled      C. was trembling    D. was trembled
9： The meeting, _______ by over five thousand people，welcomed the great hero.
A. to be attended    B. being attended    C. attended        D. having attended
10： The first textbooks _______ for teaching English a foreign language came out in the 16th century.
A. having written    B. to be written      C. being written    D. written

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