It doesn't bother me like it used to提问,to后面为什么不加do呢?

问题描述:

It doesn't bother me like it used to
提问,to后面为什么不加do呢?

此句为省略(避免重复),但不定式to保留,eg.I would like /love to(承前省)

省略

这是一种省略式用句.类似的还有:
I'd like/love to.
I an glad to.
You are suppose to.
I have to.
.