动词不定式做主语时例句?
不仅仅动词不定式可以做主语,动名词短语同样可以充当主语。例如:
动名词短语做主语,Walking on the snow is a funny thing.在雪上散步是一件美事,Flying a kite in spring is relaxing.在春季里放风筝可以让人感到放松。这些名词短语做主语有共同点,都在做主语的时候 谓语动词用单数形式,is或does三单形式。
不定式通常也可以做主语,To be clam in danger is very important/significant.在困境中保持冷静是重要的,To win the game is possible.赢得比赛是可能。
不定式和动名词短语还有特殊用法:不定式可以做后置定语,也可以表示某一动作所想达到的目地:I have some work to finish我有一些尚待完成的工作I get up early to arrive there on time我起床很早是为了准时到达目的地;
动名词通常可以作为非谓语修饰前名词,也可以做前置的定语表示一种状态或特殊含义。He standing in the street is my uncle站在街边的他是我的叔叔The growing crown is nice正在生长的庄稼发展得很好,Hearing the news ,he is very excited听到这个消息,他很兴奋。
以上是对内容的解释,希望有所帮助。
一、动词不定式的结构
to+动词原形
二、动词不定式作主语
1、做主语
例句:
To hesitate means failure.犹豫不决就意味着失败。
To do this is to cut the foot to fit the shoe.这样做是削足适履。(主语和表语均用不定式)
For him to admit his mistakes is not easy.要他承认错误是不容易的。(带逻辑主语)
To be working all day long is a bore.整天干活使人厌倦。(不定式进行式)
To have known you is a privilege.认识了你真是荣幸。(不定式完成式)
2、不定式(短语)做主语时,往往由it代替它作形式主语(但不可用that作形式主语),不定式则移至谓语之后,这种情况多见于口语中。
例句:
It's unlike him to be late.他可不是迟到的那种人。
How does it feel to be on your own?自由自在的感觉怎样?
It would be wrong for people to marry for money.人们为钱而结婚是错误的。(It+be+形容词+for短语+不定式)
It's a shame to say like that.那样说话是可耻的。(It+be+名词+不定式)
It is against may principles to do such a thing.做这样的事是违反我的原则的。(It+be+介词短语+不定式)
3、不定式作主语时,在很多情况下都可用名词替代。
例句:
Knowing oneself is difficult.了解自己很难。
提示:如果作主语的不定式是固定说法,或表示强烈的对比,或某些具体情况等,通常不用动名词替代。
例句:
To err is human.没有不犯错的人。(不说Erring is human.)
To finish this job in one day is impossible.要在一天之内完成这项工作是不可能的。(某次具体情况)
4、有时候,作主语的不定式相当于一个条件从句。
例句:
To love others is to be loved.爱人即爱己。(If you love others,you will be loved by others.)
To see her is to love her.见了她就会爱上她。(If one see her,one will love her.)
5、如果作主语的不定式短语是“及物动词+宾语”,则可以把这个宾语转换为主语,而把不定式移到句尾。
例句:
The museum requires one million dollars to build.建造这个博物馆需要一百万美元。(To build this museum requires one million dollars.)
The matter is hard to deal with.处理这件事很难。(To deal with the matter is hard.)
英语中动词不定式做主语的用法:
可以直接作主语。如: To see is to believe. 但在英语中,常用it作形式主语,真正的主语即动词不定式放在后面。
如: It's wrong to play tricks on other people. It's our duty to keep our environment clean and tidy.
规律:动词不定式在句中作主语时,常放在It is +adj.(形容词)+to do sth.或 It is +n.(名词)+to do sth. it仅作形式主语。
动词不定式与动名词作主语时的区别:
1.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。
2.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?
3.下列句子中通常要用动名词:
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!
4.下列句中通常要用不定式:
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。
1) It's easy (for me) to do that.我做这事太容易了
easy, difficult, hard, important, possible, impossible, comfortable, necessary,
the first, the next, the last, the best, too much, too little, not enough, better;
It's so nice to hear your voice.
听到你的声音真高兴。
It's necessary for you to lock the car when you do not use it.
当你不用车的时候,锁车是有必要的。
2) It's very kind of you to help us. 他帮助我们,他真好。
Kind, nice, stupid, rude, clever, foolish, thoughtful, thoughtless, brave, considerate(考虑周到的), silly, selfish(自私的)
例句:
It seemed selfish of him not to give them anything. 他不给他们任何东西,这显得太自私了。
It was silly of us to believe him. 我们真愚蠢,竟然相信了他。
注意:
1) 其他系动词如,look,appear等也可用于此句型
2) 不定式作为句子成分时,动词用单数形式。
3) 当不定式作主语的句子中又有一个不定式作表语时,不能用It is… to…的句型
(对)To see is to believe. 百闻不如一见。
(错)It is to believe to see.
要想作一名好学习意味着你必须要努力学习。
不定式作主语的情况很多。
望采纳