【練習(xí)】

1.Such________the case, I couldn't help but?________?him.

；support?? ；to support??

been；supporting?? ；supported

答案：??A

解析：??can't help but為固定短語(yǔ)， but后面接不帶to的不定式；Such being the case為獨(dú)立主格結(jié)構(gòu)，the case為邏輯主語(yǔ)。

2. The article _________ on this subject was written by Mr.Black.

A. referring ? ?B. referred ? ?C. referring to ? D. referred to

答案：?D

?解析：?過(guò)去分詞作后置定語(yǔ),意為"被提到的…".

3.?In order not to be disturbed, I spent three hours?________in my study.

g?? lock?? ing locked

答案：?B

解析：?lock與其邏輯主語(yǔ)應(yīng)含有動(dòng)賓關(guān)系，即 "被鎖在書房里"。

4.?Will you lend him a magazine _________

A. to be read ? ? B. for reading ? ?C. to read ? ?D. he read

答案：?C

解析：?不定式作定語(yǔ),to read 的邏輯主語(yǔ)是間接賓語(yǔ)him.

5.?The little boy still needs the _____ (remain ) 20 dollars to do ?with some things _____(remain; settle).（填空練習(xí)）

答案：remaining;?remaining to be settled?

解析：?第一個(gè)remaining用作形容詞，作“剩下的”解；第二個(gè)remaining to be settled 是-ing形式短語(yǔ)作定語(yǔ)。

6.Mr. Smith was much surprised to find the watch he had had _____(repair) was nowhere to be seen.（填空練習(xí)）

答案：?repaired

解析：?he had had repaired是省去了關(guān)系代詞that/ which的定語(yǔ)從句。

【小知識(shí)】動(dòng)詞不定式構(gòu)成

1、疑問詞 + 動(dòng)詞不定式：疑問代詞和疑問副詞后可加動(dòng)詞不定式構(gòu)成不定式短語(yǔ)，在句中可作主語(yǔ)、表語(yǔ)或賓語(yǔ)，如：How to prevent them from swimming in this river is a problem.

2、動(dòng)詞不定式的否定式：動(dòng)詞不定式的否定式是由not + 動(dòng)詞不定式構(gòu)成，如：It’s wrong of you not to attend the meeting.?