Its time to do sth.和 Its time doing sth.有什么区别?

Its time to do sth.和 Its time doing sth.有什么区别? its　better　do　stn还是its　bettere　to　do　sth take time to do sth. make time to do sth spend time to do sth. it is time to do sth 和it is time for sth有区别么 spend time in doing sth 和spend time to do sth有什么区别? It is time to do sth和It is time for sth有区别吗? waste time to do sth和waste time doing sth的区别? it is time to和see sb do sth造句 it's a time to do sth 和it's time to do sth 有什么区别 it is time for sth造句it is to do sth 造句和want to do sth,it is time for sth造句 waste time to do sth还是waste time doing sth? be happy to do sth和have a good time doing sth的区别 It's time to do sth it is time to do sth过去式 have a hard time doing sth和have much time to do 有什么区别? save有save sb time doing sth 和 save time to do的用法吗