特殊疑问词+动词不定式.ppt

1、,特殊疑问词+动词不定时的用法归纳,一、疑问代词who, what, which等和疑问副词when, where, how等后面跟不定式，构成不定式短语。这种结构在句中可作主语、宾语、表语、宾语补足语等句子成分。,作主语,1. 作主语：作主语时，谓语动词常用单数形式。例如： Where to go tomorrow has not been decided. 明天到什么地方去尚未决定。 How to divide labor among the workers is still a question. 这些工人之间如何分工仍是个问题。,2. 作宾语：能够接疑问词不定式作宾语的动词常用的有ad

2、vise, ask, consider, decide, discuss, explain, forget, know, learn, remember, show, teach, tell, wonder等。例如： He has to learn how to collect water, hunt for food, and make fire. 他得学会收集淡水、寻找食物，生火什么的。,谓语部分,作宾语,3. 作双重宾语（宾语补足语）：某些动词后面可接sb.疑问词不定式构成的双重宾语，这类动词常用的有advise, ask, show, teach, tell等。例如： He will

3、advise you what to do. 他会建议你们做什么。,谓语部分,宾语,宾语补足语,4. 作介词宾语：某些介词后面可接疑问词不定式作宾语，这类介词常用的有 about, as, from, in, of, on, with等。例如： He has no idea of how to answer this question. (no idea of this question) 他不知道怎样回答这个问题。 You have a number of topics from which to choose. (choose from) 你有很多题目可以选择。(which是关系代词),介

4、词,介词宾语,5. 作表语 表语是说明主语身份,职业,性质,状态或特征的句子成分，补充说明主语的意义，因此，它也叫作主语补语。表语一般用在连系动词后面，连系动词除了be之外，还有become（成为）、look（看起来）、turn（变成）、go（变成）、seem（似乎）、appear（似乎、显得）、feel（摸起来）、sound（听起来）、smell（闻起来）等等。可做表语的有: 形容词、代词、名词、分词、数词、介词短语或副词和从句：例如： We are students. He is very clever. Her face turns red.,5、作表语,Perhaps the most

5、 difficult challenge is how to survive without friends. 也许最难熬的挑战，就是生活中孤独无友。 The question is which to choose. 问题是挑选哪一个。,系动词,作表语,二、“特殊疑问词动词不定式”这种结构可以把复合句转为简单句。如： I dont know what Ill do next. I dont know what to do next. The doctor told him when he should take the medicine. The doctor told him when to take the medicine. Li Ping doesnt know why to learn English. Li Ping doesnt know why he should learn English.,Which to choose is important. Which we should choose is important. The question is where to go. The question is where we should go.,三、“特殊