to do sth 和 do sth 分别用在什么时候
一般情况下，to do 是一般将来式,是打算去做什么 ；doing 是现在进行式,是现在正在做什么，也有例外，具体情况具体分析。
下面是有关该问题的习题讲解，希望有所帮助。
to do和doing 意义各不同
1 stop doing/to do
stop to do 停止，中断做某事后去做另一件事。
stop doing 停止做某事。
They stop to smoke a cigarette. 他们停下来，抽了根烟。
I must stop smoking. 我必须戒烟了。
2 forget doing/to do
forget to do 忘记要去做某事。 (未做)
forget doing 忘记做过某事。 (已做)
The light in the office is stil on. He forgot to turn it off.
办公室的灯还在亮着，它忘记关了。(没有做关灯的动作)
He forgot turning the light off.
他忘记他已经关了灯了。 ( 已做过关灯的动作)
Don't forget to come tomorrow.
别忘了明天来。 (to come动作未做)
3 remember doing/to do
remember to do 记得去做某事 (未做)
remember doing 记得做过某事 (已做)
Remember to go to the post office after school.
记着放学后去趟邮局。
Don't you remember seeing the man before?
你不记得以前见过那个人吗?
4 regret doing/to do
regret to do 对要做的事遗憾。 (未做)
regret doing 对做过的事遗憾、后悔。 (已做)
I regret to have to do this, but I have no choice.
我很遗憾必须这样去做，我实在没有办法。
I don't regret telling her what I thought.
我不为告诉她我的想法而后悔。
5 cease doing/to do
cease to do 长时间，甚至永远停做某事。
cease doing 短时停止做某事，以后还会接着做。
That department has ceased to exist forever.
那个部门已不复存在。
The girls ceased chatting for a moment when their teacher passed by.
姑娘们在老师走过时，停了会聊天。
6 try doing/to do
try to do 努力，企图做某事。
try doing 试验，试着做某事。
You must try to be more careful.
你可要多加小心。
I tried gardening but didn't succeed.
我试着种果木花卉，但未成功。
7 go on doing/to do
go on to do 做了一件事后，接着做另一件事。
go on doing 继续做原来做的事。
After he had finished his maths，he went on to do his physics.
做完数学后，他接着去做物理。
Go on doing the other exercise after you have finished this one.
作完这个练习后，接着做其他的练习
8 be afraid doing/to do
be afraid to do 不敢，胆怯去做某事，是主观上的原因不去做，意为"怕"；
be afraid of doing 担心出现doing的状况、结果。 doing 是客观上造成的，意为"生怕，恐怕"。
She was afraid to step further in grass because she was afraid of being bitten by a snake.
她生怕被蛇咬着，而不敢在草丛中再走一步。
She was afraid to wake her husband.
她不敢去叫醒她丈夫。
She was afraid of waking her husband.
她生怕吵醒她丈夫。
9 be interested doing/to do
interested to do 对做某事感兴趣，想了解某事。
interested in doing 对某种想法感兴趣，doing 通常为想法。
I shall be interested to know what happens.
我很想知道发生了什么事。 (想了解)
I'm interested in working in Switzerland. Do you have any idea about that?
我对在瑞士工作感兴趣。你想过这事吗? (一种想法)
10 mean to doing/to do
mean to do 打算、想
mean doing 意味着
I mean to go, but my father would not allow me to.
我想去，但是我父亲不肯让我去。
To raise wage means increasing purchasing power.
赠加工资意味着增加购买力。
11 begin(start) doing/to do
begin / start to do sth
begin / start doing sth.
1) 谈及一项长期活动或开始一种习惯时，使用doing.
How old were you when you first started playing the piano?
你几岁时开始弹钢琴？
2) begin, start用进行时时，后面动词用不定式to do
I was beginning to get angry。
我开始生起气来。
3) 在attempt, intend, begin, start 后接know, understand, realize这类动词时，常用不定式to do。
I begin to understand the truth。
我开始明白真相。
4) 物作主语时
It began to melt.
12 感官动词 + doing/to do
感官动词 see, watch, observe, notice, look at, hear, listen to, smell, taste, feel + do 表示动作的完整性，真实性；+doing 表示动作的连续性，进行性
I saw him work in the garden yesterday.
昨天我看见他在花园里干活了。(强调"我看见了"这个事实)
I saw him working in the garden yesterday.（强调"我见他正干活"这个动作）
昨天我见他正在花园里干活。
do sth 一般用于祈使句中 例如 Get away frow me !
to do sth 用于将要干什么，例如 I want to go to the shop.
doing sth 表示动作正在进行，例如I am studying.
to doing sth 中to一般是介词，用于特殊的短语中，例如在信中我们经常说的I 'm looking forward to seeing you.
紫卿美罗：[答案] to do sth是不定式做主语,有时可表目的,那就会=in order to do sth do sth放在句首表示祈使句,如果不是祈使句的话,那就不能有do sth了,只能有doing sth表示动名词做主语.祈使句:例如:Make yourself at home!这里...
梧州市13165623297： to do sth 和 do sth 分别用在什么时候 - ？
紫卿美罗： to do sth 表示要去干什么事情,将要发生还没发生的事,do sth是表示现在的状态,用在现在时、过去式的时候根据时态变成doing、did、done等使用
梧州市13165623297： 动词后面可以加to do和doing有哪些 - ？
紫卿美罗：[答案] afford to do sth.负担得起做某事agree to do sth.同意做某事arrange to do sth.安排做某事ask to do sth.要求做某事beg to do sth.请求做某事care to do sth.想要做某事choose to do sth.决定做某事decide to do st...
梧州市13165623297： 关于英语动词后面加do sth 还是to do sth - ？
紫卿美罗： 一般加do sth.不定代词用to do sth.
梧州市13165623297： 总结todo和too的用法 - ？
紫卿美罗： 动词不定式(to do)可以作如下几种状语:1)目的状语 in order to do sth. so as to do sth. to do sth.2)程度状语(也有说成表示程度的结果状语) adj./adv. + enough + to do sth. too + adj./adv. +to do sth. so + adj./adv. + as + to do sth.(注意不...
梧州市13165623297： take action(s) to do sth和do sth to do sth - ？
紫卿美罗：[答案] take actions to do sth 为了做某事采取行动 do sth to do sth为了做某事而做某事 百度教育团队【海纳百川团】为您解答 请点击“选为满意答案”按钮,
梧州市13165623297： 初中动词那些跟to do,哪些跟do,那些跟doing - ？
紫卿美罗： 常见的加 to do sth 的词组或句式want (sb.) to do sth like (sb.) to do sthask sb. to do sth hope to do sthstop to do sth remember /forget to do sth need to do sth …enough to do sthI'm sorry to do sth. help sb (to) do sthwould like to do sth tell sb to...
梧州市13165623297： 请问to do sth 和 to doing sth 的区别是什么?最好举两个例子,谢谢! - ？
紫卿美罗： 一般情况下都是用to do sth,例如:I want to go swimming,我想去游泳. I have to leave now. 我得离开了.在某些特殊的短语后面要用to doing sth,属于固定用法,例如:I look forward to seeing you again,期待再次和你相见.
梧州市13165623297： to do sth 和to doing sth是怎么回事?什么时候+do?？
紫卿美罗： 当时动词不定式的时候是to do. To doing 的时候to 是介词,所以介词后面接动名词,所以是to doing. To doing 的情况最主要是判断to的词性,例如look forward to doing 是固定搭配,一定要记住.还有像from...to ...也是介词,可能会出现from (doing) sth to (doing) sth.
梧州市13165623297： It is +adj+ to do sth中It是形式主语吗?真正的主语是动词不定式to do st - ？
紫卿美罗：[答案] 同学,在这个句型中,it是做形式主语的,那真正的主语是to do不定式,有时这个句子中会加入for sb的情况.比如,举个例子:It is right (for Mary) to finish the homework.it 做形式主语,to finish the homework是真正的...
