什么单词后面是跟 to doing 形式的,都要!有多少给多少.

在这里,to是介词,to doing 是介宾结构.
以下内容抄至网络,
look forward to doing wth （盼望做……事情）.
I'm looking forward to seeing you soon.（我盼望着快些看到你）
go to doing sth,去做……事情,通常省略to.
We're going (to) camping soon（我们要去野炊）
1．动词+介词to+动名词
(1) admit to doing sth.承认做了某事
He admitted to breaking the window.
(2) apply to doing sth.适用于做某事
The technology is applied to creating more products.
(3) object to doing sth.反对做某事
He is object to doing that.
(4) see to doing sth.负责做某事
I'm seeing to taking care of the olds here.
(5) stick to doing sth.坚持做某事
Don't give up!Stick to hard working and you'll soon succeed.
(6) take to doing sth.喜欢上做某事,逐渐习惯做某事
He takes to going to school on foot.
2．动词+宾语+介词to+动名词
(1) apply oneself to doing sth.专心致力于做某事
(2) devote sth.to doing sth.把……献给做某事
(3) devote oneself to doing sth.献身于做某事
(4) limit sth.to doing sth.把……限制在做某事的范围内
(5) reduce sb.to doing sth.使某人沦为做某事
3．动词+名词+介词to+动名词
(1) give one’s life to doing sth.献身于做某事
(2) give one’s mind to doing sth.专心做某事
(3) have a dislike to doing sth.厌恶做某事
(4) have an eye to doing sth.注意做某事
(5) have an objection to doing sth.反对（反感）做某事
(6) pay attention to doing sth.注意做某事
(7) set one’s mind to doing sth.决心做某事
4．be+形容词+介词to+动名词
(1) be equal to doing sth.等于做某事,能胜任做某事
(2) be used to doing sth.习惯于做某事
(3) be opposed to doing sth.反对做某事
(4) be reduced to doing sth.使某人沦为做某事
(5) be devoted to doing sth.把时间（钱,精力等）献给做某事
(6) be limited to doing sth.把……限制在做某事的范围内
5．其他结构+介词to+动名词
(1) get down to doing sth.开始做某事,认真处理某事
(2) look forward to doing sth.盼望做某事
(3) What do you say to doing sth?你认为做某事如何?

to作为介词时，后面如果跟着动词，则该动词应变为-ing形式。
如果是初中，基本常见常考的就这几个：

stick to doing sth 坚持做...
pay attention to doing sth 注意做...
look foward to doing sth 盼望做...
be/get used to doing sth 适应/...