动词的ing形式作主语和宾语.ppt
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1、1性质:它具有动词的特点,但在句子中起着名词、形容词、副词的作用,充当主语、表语、定语、宾语、宾语补足语、状语的作用即:做除谓语以外一切成分。,非谓语动词,在动词-ing前加not Thank you for not smoking.His not coming made everyone very disappointed.,动词-ing形式的否定形式:,动词的ing形式作主语,表语和宾语,什么是主语(subject)?什么是宾语(object)?,He likes his dog.,主语,宾语,Swimming is my interest.,I like reading.,主语,宾语,结
2、论,_不能作主语和宾语_可以作主语和宾语,动词原形,动词的ing形式,1 动词-ing形式可直接置于句首作主语,谓语动词用单数。Seeing is believing.眼见为实。,A.动词的ing形式作主语,Dancing is their hobby.,dance,hobby,Biting nails is not a good habit.,bite nails,habit,Doing exercise is the best way to lose weight.,do exercise,lose weight,2 为了保持句子平衡,通常用先行词it作形式主语,而把真正的主语放在句末。此
3、类句型有:,总结:用it作 主语,而把真正的主语 移置句尾。,It is no use/useless doing sth It is no good doing sth.做.是没有好处的It is worthwhile doing sth It is pleasant doing sth It is a waste of time doing sth,做是没有用的。,做是值得的。,做是有乐趣的。,做是浪费时间的,形式,动词ing形式,It is no use useless doing sth 做是没有用处的。,It is no use.,trying to escape,It is/was
4、 worthwhile doing sth 做是值得的。,It is worthwhile.,seeing the film,It is/was a waste of time doing sth 做是浪费时间的。,It is a waste of time.,playing computer games,It is/was pleasant doing sth 做是有乐趣。,It is pleasant.,playing with friends,It is no use trying to escape.It is worthwhile seeing the movie.It is a w
5、aste of time playing computer games.It is pleasant playing with friends.,1 表示主语的内容。此时,主语表语位置可互换 Her job is keeping the baby.=Keeping the baby is his job.2 表示主语具有的特征 The problem is quite puzzling.,B.动词的ing形式作表语,1.作介词的宾语。2.作及物动词的宾语。,C.动词的ing形式作宾语,结论:凡是介词后面加动词时,一律用动词的ing形式。我们把这种情况称作动词的ing形式作介词的宾语。常用的短语
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