为什么要用it's time foryou i to go to school而不是it's time for you and me to go out?

It is time for them () have lunch.为什么要用to have.不是It's time for sth.吗 it's high time that we did sth.这里为什么要用虚拟语气?it's time to do sth,这里为什么不用虚拟? it's the first time 后面为什么要接现在完成时, 为什么要用it's time foryou i to go to school而不是it's time for you and me to go out? it's time什么时候接不定式?什么时候用虚拟语气?为什么要用虚拟语气啊？ it's a () time to go to bed为什么要用 fun 或funny it's high time that we did sth.这里为什么要用虚拟语气? It's+been++a+long+time.been在这里起什么作用?为什么要用been It's nine o'clock.It's time _______English class.为什么要填for进去? It's spring time already.这里为什么用spring time 而不用the spring it’s exciting to spend time ( )(play) init’s exciting to spend time ( )(play) in the snow with friends.空格里为什么要用playing it's time for school.的同义句it's time ()()(）（)为什么 it's time we were 为何要用were? It`s the first time that he has been to Australia,isn`t it?中,为什么要用isn`t it,而不用hasn`t he? It's time to get up .the little girl is putting on her clothes中为什么要用to get It's the first time I have played the computer games.为什么要用现在完成时啊. it’s exciting to spend time ( playing ) in the snow with friends.这里为什么要用playing 用it's time for sth造句