to do和doing做主语的区别

如题所述

不定式和动名词都可在句子中作主语,一般说来,有下面几点须给予注意:\x0d(1) 不定式一般表示具体的、特定的行为;而-ing分词一般表示抽象的、一般的行为.如:\x0dTo complete the program needs much effort.完成这项计划需要很大的努力.\x0dRiding a bike can make a man smart.骑单车能使一个人敏捷.\x0d(2) 在疑问句中,只能用动名词的复合结构作主语.如:\x0d(3) 在某些句型中通常要用动名词短语作主语.如:It is no use doing…/ It is no good doing… / It is useless doing…/ It is worthwhile doing…如:\x0dIt is no use talking your trouble to a man like him.跟他那样的人谈你的烦恼没有用.\x0d(4) 一般说来,作主语和表语的非谓语动词形式应一致,即:或同时为不定式,或同时为-ing分词.如:\x0dSeeing is believing.眼见为实.\x0d但是,在现代英语中,当表语用来说明主语的特定意义或具体内容时,主语和表语的非谓语动词的形式可以不一致,即,主语用动名词,而表语用动词不定式.如:\x0dWaving your hand is to say “Good-bye”.挥手就是说“再见”.\x0dNodding your head is to say “Yes”.点头就是说“对,是的”.
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第1个回答  推荐于2016-04-03
to do,有将来的含义,一次性的动作。
doing表示长时间,多次的行为,动作的进行。本回答被提问者和网友采纳
第2个回答  2015-04-11
to do动词不定式和doing动名词
第3个回答  推荐于2016-03-06
一、.动名词和不定式做主语的相同点
1. 不定式短语和动名词做主语时,常常为了保持句子的平衡,用it来做形式主语。如:
It is not easy to learn English well.
It is no use asking him for help.
2. 如果主语用了不定式,表语和宾语也要用不定式;主语用了动名词,表语和宾语也要用动名词,这在英语中称为对称性。如:
To see is to believe. = Seeing is believing. (眼见为实)
It is better to stay home than to go out.

二、动名词和不定式做主语的不同点
1. 不定式做主语常表示具体的某一动作,表示泛指或一般的抽象的概念时,多用动名词。如:
Walking is a good form of exercise for both young and old.

2.在”There/It +be+ no use(good/help/need)”之后常用动名词做主语,而少用不定式。如:
It /There is no use crying over the split milk.
It /There is no help taking this medicine.
但是,如果该句型中用了for引出不定式的逻辑主语,就只能用不定式。如:
There is no good for us to do that exercise.

3. 不定式可以和when, where, how, what, whether等连用,在句子中做主语,宾语和表语,而动名词则不能。如:
How to solve the problem is a hot potato.
Where to put the box seems hard to decide.
Whether to do it hasn't been decided.
What to do next is up to you.
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