非谓语动词 (4).doc

文档介绍：非谓语动词易混淆讲练
近年来高考命题者常通过改用熟悉的句型结构或利用一些“貌合神离”的手段，加大考生辨别非谓语动词的难度。下面笔者结合多年教学经验，将学生易混易错题归纳并加以对比。
1．The little girl had no choice but_____ at home．
②The little girl could do nothing but______ at home．
A．to stay B．to staying C．stayed D．stay
解析：当but前的句子有实义动词do的某种形式(do，does，did，done)时，后接不带to的不定式，即“有do省to"。句①中无行为动词do，不定式符号to要保留，故选A；句②中有行为动词do，故不定式符号to要省去，故选D。
2．①There_____ no buses, we had to walk home．
②There_____ no buses，so we had to walk home．
A．is B．were C．are D．being
解析：句①逗号后面是一个成分完整的句子，因此逗号前面应该是非谓语动词，这里是分词短语作原因状语，故选D。 句②中有并列连词so，它连接两个句子，故选B。
3．①The book is worth_____, I think． ②The book is worthy of—I think．
③The book is worthy____ ,I think．
A．to be read B．being read C. reading D. read
解析：形容词worth后接动名词的主动形式表示被动意义，故①选C；而worthy的用法是：be worthy of being done或者be worthy to be done，故②选B，③选A。
4．①He needs_____ on. ②The doctor needs_____ on him．
A．to operate B. being operated C．operate D．to be operated
解析：动词need，require，want作“需要”解时，其后必须用动名词的主动形式或不定式的被动形式作宾语，表示某事需要做，这时动名词的主动形式表示被动意义，故①选D。句②为sb need to do sth句型，表示“某人需要做某事”，故选A。
5．①_____ many times，so he could understand it.
②_____ many times，he couldn’t understand it.
③_____many times，he still couldn’t understand it.
A．Having been told B．Having told C. He had been told D．Though he had been told
解析：句①中有并列连词so，它常置于两个句子之间，因此逗号前应