be going to do 和be doing用法的区别?
be going to do 和be doing用法的区别?
be doing和be going to的区别和用法!
be doing和be going to do的区别
be going to do和be doing的区别,急,
be doing be is going to will用法的区别
be going to do和be doing和want to do 三者之间的区别
be doing 和will do 和be going to do 的区别
be going to do/be doing/will do/be to do等 的区别~
be used to do和be used to doing的用法和区别
be going to和be going to do的区别?
be going to表将来、be doing表将来和will/shall+do三者间的区别
be about doing 和 be about to do的区别和用法!