作业帮to do 和doing做主语的区别
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to do 和doing做主语的区别
to do 和doing做主语的区别
to do 和doing做主语的区别
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)
(85)It is better to stay home than _A__ out.
A.to go B.going C.go D.gone
Ⅱ.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:
(92)_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:
(93) 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.
连接上还有许多,可以借鉴
to do主要用来表示一次性具体性将要发生性的行为。其逻辑主语暗中有所指。
doing主要用来表示经常性习惯性抽象性发生的行为。其逻辑主语暗中无所指。
To play with fire is dangerous.指有人要玩火。将要发生性
playing with fire is dangerous.教育性宣传。抽象性
To see is to believe.指有...
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to do主要用来表示一次性具体性将要发生性的行为。其逻辑主语暗中有所指。
doing主要用来表示经常性习惯性抽象性发生的行为。其逻辑主语暗中无所指。
To play with fire is dangerous.指有人要玩火。将要发生性
playing with fire is dangerous.教育性宣传。抽象性
To see is to believe.指有人要撒谎。一次性将要发生性
Seeing is believing.教育性宣传。经常性抽象性。
I like to swim in the river.一次具体性
I like swimming.经常性反复性
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to do表示一次性，或将要进行的动作
doing表示经常性或已发生的动作