【練習】

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

答案：??being

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

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

答案：?to make?

?解析：?不定式作結(jié)果狀語表示主語未曾預料到的結(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)果狀語的區(qū)別。"only＋不定式"表示該結(jié)果在主語的預料之外；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,本題極易誤選A。其實 enjoy的賓語為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,"沒有能夠…".A項句子意義不通,D項表達不對.

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）

答案：?having thought

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

【小知識】動詞不定式的基本用法

（1）動詞不定式在句中作賓語，如帶有賓語補足語時，須先用it作形式賓語，而將該動詞不定式后置，如：I don’t think it right to do it that way.

（2）作定語：動詞不定式作定語時，須位于被其修飾的名詞或代詞之后，如：Is this the best way to help him?
和定語用的動詞不定式如果是不及物動詞，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，習慣上可以省去，如：The old man is looking for a quiet place to live. ?