非谓语动词作主语和表语.ppt

过去分词不作主语和表语过去分词不作主语和表语 Walking is a good form of exercise for both young and old.(全国卷全国卷)To have a walk is my plan this afternoon.表示具体的、一次性的或将来的动作用表示具体的、一次性的或将来的动作用to do；表示一般的、泛指的或习惯性的行为用动；表示一般的、泛指的或习惯性的行为用动名词。名词。What do you think made Mary so upset?_ her new bike.(上海卷上海卷)A.As she lost B.Lost C.Losing D.Because of losing 有时这种区别并不很严格有时这种区别并不很严格.-ing作主语只体作主语只体现相当于名词词性的词现相当于名词词性的词Fishing is his favorite hobby,and _.(上海卷上海卷)A.hed like to collect coins as wellB.B.he feels like collecting coins,tooC.to collect coins is also his hobbyD.collecting coins also gives him great pleasure要注意要注意-主语和表语要用同一种形式；主语和表语要用同一种形式；平行结构中要用同一种形式。平行结构中要用同一种形式。Its useless arguing with them.和他们讨论是没用的和他们讨论是没用的 It is no good/use,It is useless,There is no等句型中用动名词作主语等句型中用动名词作主语 1.It is necessary for us to master a foreign language.我们有必要掌握一门外语。我们有必要掌握一门外语。2.It is very kind of you to help us.你帮你帮助我们真是太好了。助我们真是太好了。3.It took me two hours to finish the work.我完成那项工作用了两小时。我完成那项工作用了两小时。在在It is necessary/important/(for sb.)to do sth.句型中；句型中；It is kind/foolish/(of sb.)to do sth.在在It takes sb.time to do sth.1.My job is teaching/to teach English.2.Teaching/To teach English is my job.不定式和动名词作表语相当于名词作表语。不定式和动名词作表语相当于名词作表语。表示主语的内容时，主语和表语可以对调；表示主语的内容时，主语和表语可以对调；