It is time for something.和It is time to do something.有什么区别?

It is time for school It is time for go it is time for ~~`~~·~~~~~~~``~~~~~~ it is time for sleeping it clock it is time for造句 it is time for bed同意句 it is time for是不是 用过去式 It is time for后加什么 it is time for having supper. it is time for什么lunch It is time for class.(冋义句) is it time for _(乐趣) It is time for sports 什么意思 It is time for class 什么意思? 英语It is time for dinner是什么意思 It is time to do sth It is time for sIt is time to do sthIt is time for sthIt is time for sb.to do sth it is time for class.这里为什么用for? it is time to have dinner＝?it is time to have dinner=it is time for dinner=?还等于什么?it is time _____ _______dinner.