Question

有it is time for sb. doing sth.和it is time for doing sth.这个句型吗?为什么？

Answer 1

It is time for sb to do sth. 对某人来说到做某事的时间了，或对某人来说该做某事了。
It is time for doing sth. 该做某事了。
例如：It is time for you to go to school，or you'll be late. 你该上学了,否则你会迟到。
It is time for going to school. 该上学了。
这两个句型都是固定句型，记住就可以了。

Answer 2

你好。英语中只有it is time for sb to do sth这个结构，没有it is time for sb. doing sth.
只有it is time for sth(名词/代词) 这个结构i，没有it is time for doing sth.
比如说：
It is time for me to go to bed. / It is time for bed

Answer 3

前一个句型有，后一个没有。