特殊疑问词动词不定式精选课件.ppt

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1、关于特殊疑问词动词不定式第一页，本课件共有12页n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。第二页，本课件共有12页 作主语n1.作主语：作主语时，谓语动词常用单数形式。例如：nWhere to go tomorrow has not been decided.n明天到什么地方去尚未决定。n How to divide labor among the workers is still a question.n这些工人之间如何分工仍是个问题。第三页，本课件共有12页n2

2、.作宾语：能够接疑问词不定式作宾语的动词常用的有advise,ask,consider,decide,discuss,explain,forget,know,learn,remember,show,teach,tell,wonder等。例如：nHe has to learn how to collect water,hunt for food,and make fire.n他得学会收集淡水、寻找食物，生火什么的。谓语部分作宾语第四页，本课件共有12页n 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,t

3、ell等。例如：n He will advise you what to do.n他会建议你们做什么。谓语部分宾语宾语补足语第五页，本课件共有12页n 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：nHe has no idea of how to answer this question.n(no idea of this question)n他不知道怎样回答这个问题。nYou have a number of topics from which to choose.n(choose from)n你有很多

4、题目可以选择。(which是关系代词)介词介词宾语第六页，本课件共有12页n5.作表语 n 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：nWe are students.He is very clever.Her face turn

5、s red.第七页，本课件共有12页5、作表语nPerhaps the most difficult challenge is how to survive without friends.n也许最难熬的挑战，就是生活中孤独无友。nThe question is which to choose.n问题是挑选哪一个。系动词作表语第八页，本课件共有12页n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：nI dont know what Ill do next.n I dont know what to do next.nThe doctor told him when he sh

6、ould take the medicine.n The doctor told him when to take the medicine.n Li Ping doesnt know why to learn English.n Li Ping doesnt know why he should learn English.第九页，本课件共有12页nWhich to choose is important.n Which we should choose is important.nThe question is where to go.n The question is where we should go.第十页，本课件共有12页n 三、“特殊疑问词动词不定式”这种结构可构成独立问句。如：n What to do?怎么办？n How to get rid of the trouble?如何摆脱困境？第十一页，本课件共有12页08.12.2022感感谢谢大大家家观观看看第十二页，本课件共有12页