be going to doing有这个用法吗
be going to doing有这个用法吗
be going to doing这种用法有吗?
be just going to do有这个用法吗
be going to do之外有be going to doing有这个句型么,
to be doing和to have been (求助中……有这个用法吗?)
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 be is going to will用法的区别
be going to be,will be和be doing在用法上有什么区别,什么时候用什么
有这用法吗so adj to be doing
be doing与be going to do有什么区别?
be going to,be doing,will do有什么区别