动词不定式做表语动词不定式作表语表示什么?

不定式和动名词作主语与表语比较 ■表示一般的、泛指的或习惯性的行为用动名词；表示具体的、一次性的或将来的动作用不定式.如：Swimming is fun in summer.夏天游泳是有趣的事.Swimming in this river is a great pleasure.在这条河里游泳是件非常快乐的事.注：有时这种区别并不很严格.但要注意：主语和表语要用同一种形式；平行结构中要用同一种形式.如：To see is to believe.=Seeing is believing.眼见为实.Fishing is his favorite hobby,and collecting coins also gives him great pleasure 钓鱼是他的爱好,集邮也给他带来极大的乐趣.■口语中,陈述句多用不定式作主语,而疑问句却总是用动名词作主语.如：Is doing morning exercises good for your health?做早操对你身体有好处吗?■下列句子中通常用动名词：It’s no good/use talking to him.找他谈是没有用的.It’s useless discussing the matter.讨论此事无益.There is no stopping him.无法阻止他.No parking!禁止停车!■下列句中通常用不定式：It took us two hours to get there.去那里我们花了两个小时.It’s foolish of him to do so.他这样做是愚蠢的.It is necessary for us to learn English well.我们有必要学好英语.引用地址:http://www.***.com/Article/201008/1664.html