动名词作主语和动词不定式做主语的区别?
动词不定式与动名词的区别:)to+V放句首为动词不定式,用法与V+ing差不多,多用于
后面所说的事情还没有发生。例:To be a author is my dream. V+i ng 放句首是动名词,其
相当于名词,例:Doi ng lots of exercise is good for health. 一般来讲,to+ v.表主动,表
将来,表一次行动作。-ing表主动,表进行。动词不定式与动名词的一些用法:)不定
式与动名词都可以在句中作主语、宾语、表语和定语,但用法不尽相同。 1 ?作主语一般情
况下,不定式与动名词作主语可以互换,也常常可以用it充当形式主语,而把不定式和动名词放在句子的后半部分。但二者也有区别,不定式常常指某次具体的、将要发生的行为;而动名
词则表示一般的、抽象的行为。例如:To save money now is not easy. 现在攒钱不容易。
Savi ng mo ney is a good habit. 攒钱是个好习惯。 2 .作定语不定式多为后置定语,动名词
多为前置定语;不定式多表示将来的动作,动名词只能表示事物的属性、用途等。例如:He is look ing for a room to live in. 他正在找一间房子去住。Take these sleep ing pills and you\'ll sleep better.吃了这种安眠药,你会睡得更好。3 .作宾语:有些动词后只能跟不定式作宾语,不能跟动名词作宾语;有些动词后常跟动名词作宾语,不能跟不定式作宾语;有些动词后跟不定式和动名词作宾语皆可,
1、动名词做主语往往表示普通的、一般的行为,不定式做主语常表示某次具体的行为。例女口:
Collect ing in formation about childre n ' s health is his jc收集有关儿童健康的信息是他的工作。It ' s necessry to discuss the problem with an experieneed teacher. 与一位有经验的老师讨论这个问题是有必要的。2、常用不定式做主语的句型有:
(1)
It ' s difficult (important,necessary) for sb. to do (2)It ' s kind (good,friendly,polite, careless,rude,cruel,clever,foolish,brave) of sb. to do. 3 、常用动名词做主语的句型
有: It ' s no good (use,fun) doing. It ' s (a) waste of time one 另:1)s动o名词作主语通常表示抽象动作;而不定式作主语表示具体动作。Smoking is prohibited(禁止)here .这里禁止抽烟。(抽象)It is not very good for you to smoke so much .你抽这么多烟对你身体很不好。(具体)(2)动名词作主语时,通常用以表示一件已知的事或经验。
不定式短语通常用来表示一件未完成的事或目的。Climb ing mou ntai ns is interesting .爬山很有趣。(经验)Driving a car during the rush hour is tiring .在高峰时刻开车令人厌烦。(经验)(3 )不定式做主语,一般用it当形式主语,把作主语的不定式短语后置。It took me only five minu tes to finish the job.
I .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 A out.
A. to go
B. going
C. go
D. gone
n .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:_B_ is a good form of exercise for both young and old.
A. The walk
B. Walking
C. To walk
D. Walk
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' Ibeen decided.
What to do next is up to you.