区分动词不定式和ing形式

动词后用“ING形式”还是“动词不定式”？

一，有些动词即可跟ING形式，又可跟动词不定式，通常意思不一样。最重要的动词如下advise, allow, attempt, can't bear, begin, continue, forbid, forget, go on, hate, hear, intend,

like, love, permit, prefer, propose, regret, remember, see, start, s top, try, watch

某些形容词的用法也这样：

accustomed, afraid, certain, interested sorry, sure, used

二，与remember, forget, stop, go on和regret连用时，其区别与时间有关联。带ing 形式指的是发生较早的事（在remembering, forgetting等等之前发生的事）；动词不定式指的是发生在remembering 等之后的事。

"remember + doing"指记得已经做了的事或已经发生的事。

"remember + to do"指记得需要做的事。

“forget + doing"指忘记已做的事或已发生的事。

"forget + to do"指忘记要做的事。

“stop + doing"指停下经常做或正在做的事。

"stop + to do" 指中断下来或停下来，以便做某事。

"go on + doing"指继续做一直在做的事。

"go on + to don"指变换下改做另一件事。

"regret + doing" 指对已发生的事感到遗憾。

"regret + to do" 指对将要说出的话感到歉意。

三，与形容词 interested 连用时，带ING形式指将要（或可能）发生的事，而动词不定式指已经发生的事。

interested in doing是对做某事的想法感兴趣。

interested doing是对所了解的事或经历的事感兴趣。

like doing (=enjoy)

I like walking in the rain.(也可以用动词不定式表达这个意思尤其是在美国英语中）like to do (=choose to ;be in the habit of; think it right to)

I like to get up early.

I didn't like to disturb you.

注意：would like的意思是wish 或want,后面永远跟动词不定式。

四，与love, hate, prefer 连用时，两种无大区别。不过在指特定场合时更常用不定式。allow, advise, forbid 和permit在不以人作宾语的情况下，后面跟带ING形式。

如说明了谁得到允许，受到劝告等时用不定式。

Sorry, we don't allow smoking in the reading room.

We don't allow people to smoke in here.

I wouldn't advise taking the car----there's nowhere to park.

I wouldn't advise you to take the car....

五，在see, watch, hear 之后用带ing形式，表示我们观察到了整个动作的一部分；当我们开始看或听见时，动作早已在进行。当我们表示一个动作自始至终的全过程时，就用动词不定式。

When I walked past his house I heard him practising the violin.

I heard him play the Beethoven violin concerto last week.

try + doing 意思是“试一试，或做某事，以观察会发生什么事。”

I tried sending her flowers but it didn't have any effect.

Try putting in some more salt-----that might make it taste a bit better.

try + to do 意思是做一番努力；试图做某种困难的事。

Please try to understand.

I once tried to learn Japanese

六，afraid of doing和afraid to do在意思上没有多少区别。

I'm afraid to fly/of flying.

I'm afraid to tell/ of telling her.

如果谈论那些我们自己并不希望也不能决定而突然发生在我们头上的事情，则只能用带ing 形式。

I'm afraid of crashing.(不能说... to crash.)

I don't like to speak French because I'm afraid of making mistakes.(不能说：... to make mistakes.)

试比较一下：

I'm afraid of diving/to dive into the swimming pool.(= I don't want to do it.) I'm afraid of falling into the swimming pool.(=I don't want it to happen to me.这里不能说：... to fall ....)

八，当我们为正在做或将要做的事表示歉意时，就用sorry带一动词不定式。当我们为做了某事而道歉时就用动词不定式的完成式，或用for doing, 或that 从句。

Sorry to have woken you up yesterday.

I'm sorry for waking you up (or: for having woken you up.) yesterday

I'm sorry that I woke you up yesterday.

be certain/sure to do sth.意思是“肯定会做某事”。讲的是将要发生的事。

be certain/sure of doing sth.意思是“觉得肯定要做某事”（但这种想法可能是错的）。讲的是某人的思想状态。

Manchester are certain/sure to win: the other team haven't got a chance.

Before the game started Alan felt quite sure/certain of winning, but after the first five minutes he began to lose confidence