start to do和start doing的区别

start to do sth与start doing都是“开始做某事”的含义.但在以下三种情况,常用START TO DO不用start doing的形式：
1.句子主语是物不是人的时候,后用start to do sth
2.当start用于进行时即starting时,后接to do sth.
3.当start后接的动词为表示心理活动的动词如understand,realize等时,后接to do sth.
其他通用.

比如说什么时候用start to do sth 什么时候用start doing sth，start,begin,continue,cease这样一些表示开始,继续和结束意义的动词,既可以接to do ,也可以接V-doing,大体上说,意义没有明显的差别.

但在某些有限的情况下,start to do sth 意思是指“开始去做某事”,有“潜在的可能”；start doing sth 意思是指“开始做某事”,有“实际进行”的意思.当涉及到多次活动时使用start doing更为恰当.

以下将举例说明：

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.

start to do开始去做某事，事情没做过。start doing 开始做某事，某事做过了的

start to do是指停止正在做的事转而做另一件事；strat doing是指开始做某一件事，就是做一件而不存在之前在干什么

这类动词，两种接续在意义上几乎没有区别，但动名词表示一般概念，抽象概念，泛指以成为过去的动作，时间概念不强，不是某一次动作，或者表示有意志支配的动作，它的逻辑主语可能是句子的主语，也可以泛指一般人，在句子里是找不到的，多用于书面语里。动词不定式表示的动作往往是具体的或特定的动作，或者是现在或将来的动作，无意志支配的动作，逻辑主语常常是句子的主语，多用于口语里。
They ceased to sing.
They ceased singing.
I intend majoring in economics in college.
I intend to major in economics in college.
此外，还有start、begin、commence、continue、like、dislike、fear、hate、intend、attempt、love、neglect、omit、prefer、forbear等。
有一些动词如stop、quit、remember、forget、regret、try、can’t help、mean、want、need、deserve、go on、chance、leave off等，接动词不定式和动名词时，意思是不一样的。如：
The boy tried to move the heavy sofa.
The boy tried moving the heavy sofa.
I remembered locking the door the night before.
Remember to lock the door.
Never will I forget hearing her song.
I forgot to hear her song.
He stopped having breakfast.
He stopped to have a cup of coffee.
He left off having breakfast.
He left off to spend his vacation.
I regret not taking good care of myself.
I regret to say that I can’t help you.
He went on talking for three hours.
He went on to write one hundred large characters.
动词不定式作不完全及物动词的宾语时，要用it作形式宾语，如：
I found it difficult to understand this theory.
He made it his duty to help the students.
动名词作不完全及物动词的宾语时，宾语补语往往是no use、useless、worthwhile、senseless、fun、no good、a bore、a waste of time等。
The pain in my throat made speaking difficult.
Do you find living here interesting?
He deemed it no use crying over spilt milk.
I find it of no use trying to persuade him.
I found it senseless arguing with him.
I don’t think it worthwhile reading the book.
I consider it worth his while helping the foreigner.
I consider it a bore being kept waiting.
介系词加动名词结构，表示泛指的动作，或者表示持续、反复发生的动作，有意识支配的动作，多用于书面语中，动词不定式表示特指、一时、一次或不确定的时间过程中的一次次动作，无意志支配的动作，多用于口语中。如果谓语动词用了进行时，后面就不宜再用动名词，如：
The water is too hot for drinking.
The water is too hot to drink.
The food is adequate for lasting the winter.
The food is adequate to last the winter.
希望我能帮助你解疑释惑。