【練習(xí)】

1.??There _____ (be) no rain for a long time, most of the crops in this area died from lacking water.（填空練習(xí)）

答案：??being

解析：??There being no rain為 there be句型的獨(dú)立主格形式。

2.Yesterday a street-beggar bought a lottery ticket purposelessly, _____(make) ?him a millionaire overnight.（填空練習(xí)）

答案：?to make?

?解析：?不定式作結(jié)果狀語(yǔ)表示主語(yǔ)未曾預(yù)料到的結(jié)果。

3.?He hurried to the station,_____the 9：30 train had already left.

find?? to find?? finding

答案：?C

解析：?本題考查"（only）＋不定式"與"-ing形式"作結(jié)果狀語(yǔ)的區(qū)別。"only＋不定式"表示該結(jié)果在主語(yǔ)的預(yù)料之外；接"-ing"形式表示由主句所產(chǎn)生的邏輯上的結(jié)果。

4.?Which do you enjoy_____your weekends, fishing or watching TV?

ng?? spend?? spent??

答案：?B

解析：?本題考查不定式作目的狀語(yǔ),本題極易誤選A。其實(shí) enjoy的賓語(yǔ)為fishing or watching TV。

5.?As a result of my laziness, I failed ________ my work intime.

A. and finished ? ?B. to finish ? ? ?C. and finishing ? ? D. to finished

答案：?B

解析：?fail to do sth. 固定短語(yǔ),"沒有能夠…".A項(xiàng)句子意義不通,D項(xiàng)表達(dá)不對(duì).

6.?The boy often gives a satisfactory answer to the teacher’s question, _____(think) ?just a minute. So he’s usually the teacher’s pet.?（填空練習(xí)）

答案：?having thought

解析：?-ing形式短語(yǔ)作狀語(yǔ)，且think(思考)表示的動(dòng)作發(fā)生于give a satisfactory answer之前，故用having thought。

【小知識(shí)】動(dòng)詞不定式的基本用法

（1）動(dòng)詞不定式在句中作賓語(yǔ)，如帶有賓語(yǔ)補(bǔ)足語(yǔ)時(shí)，須先用it作形式賓語(yǔ)，而將該動(dòng)詞不定式后置，如：I don’t think it right to do it that way.

（2）作定語(yǔ)：動(dòng)詞不定式作定語(yǔ)時(shí)，須位于被其修飾的名詞或代詞之后，如：Is this the best way to help him?
和定語(yǔ)用的動(dòng)詞不定式如果是不及物動(dòng)詞，不定式后面就要用必要的介詞，如：He is the man to depend on.
如果被不定式修飾的名詞為place, time, way，不定式后面的介詞，習(xí)慣上可以省去，如：The old man is looking for a quiet place to live. ?