It's time for
It's time for studying. 这种用法对吗？
参考答案:都对啊！
It's time for sth./doing sth.
It's time for sb. to do sth.
It's time to do sth.
这四个句型可以互换!
e.g.
It's time for dinner.=It's time for having dinner.=It's time for us to have dinner.=It's time to have dinner.