【練習(xí)】

1. Taking this medicine, if _____(continue) , will of course do good to his health.?（填空練習(xí)）

答案：continued

解析：if continued 是“if taking this medicine is continued”的省略形式。

2. In the face of the big fire in October in California, many people in the fire-stricken areas moved out ?_____(escape ; burn)???（填空練習(xí)）

答案：?to escape being burned不定式作目的狀語(yǔ)。

解析：?escape 意為“逃脫”，不接不定式，而常接-ing形式作賓語(yǔ)。只能接-ing形式作賓語(yǔ)的動(dòng)詞還有:mind， admit，avoid，appreciate，consider(考慮)， delay， imagine，miss，practice等。

3.?O'Neal works hard.He is often seen ＿＿＿h(yuǎn)eavily before his teammates start.

d?? be sweated?? ng?? sweated

答案：C

解析：分詞在句中作主語(yǔ)補(bǔ)足語(yǔ)。因sweat這一動(dòng)作是he所發(fā)出，所以為主動(dòng)。

4.?I remained _______ long after I had been told the story.

A. puzzling ? B. puzzled ? ? C. being puzzled ? ?D. to be puzzled

答案：?B

解析：??puzzled 表主語(yǔ)感到迷惑不解的，puzzling 表令人迷惑不解的，beingpuzzled強(qiáng)調(diào)正在進(jìn)行的被動(dòng)動(dòng)作，to be puzzled表在主句謂語(yǔ)之后發(fā)生。

5.?I can hardly imagine Peter_______?across the Atlantic Ocean in 15 days.

sail?? g?? have sailed

答案：?C

解析：?Peter為邏輯主語(yǔ)，與sailing構(gòu)成復(fù)合結(jié)構(gòu)，作imagine的賓語(yǔ)。

6.?I _____(drive) along the quiet road at forty miles an hour, and then an old man suddenly started to cross the road in front of me.??（填空練習(xí)）

答案：was driving

解析：?因句中有連詞and，所以and 之前必須是一個(gè)并列關(guān)系的分句。

【小知識(shí)】復(fù)合結(jié)構(gòu)動(dòng)詞不定式

復(fù)合結(jié)構(gòu)不定式：由for + 名詞（或代詞賓格）+ 動(dòng)詞不定式即構(gòu)成復(fù)合結(jié)構(gòu)的動(dòng)詞不定式。

其中for本身無(wú)意義。for后面的名詞或代詞是不定式的邏輯主語(yǔ)，這種不定式在句中可作主語(yǔ)、表語(yǔ)、賓語(yǔ)、定語(yǔ)或狀語(yǔ)，如：It is very important for us to get everything ready for the harvest.

當(dāng)作表語(yǔ)用的形容詞表示不定式的邏輯主語(yǔ)的性質(zhì)或特征時(shí)，就用介詞of而不用for引出不定式的邏輯主語(yǔ)，這些形容詞一般有g(shù)ood, nice, kind, wise, silly, stupid, foolish, right, wrong, careless, impolite等，如：It is very kind of you to help him every day.?