be doing与be going to do有什么区别?

be doing与be going to do有什么区别? 英语be going to do还是doing be doing表将来与be going to区别?不要抄的? be doing be is going to will用法的区别 be going to,be doing,will do有什么区别 will,be going to,be doing用于一般将来时的区别 be doing和be going to的区别和用法!be doing和be going to的区别和用法 区别be going to,be about to,be doing,be to be going to be doing和will be doing表示的是什么意思? be going to be going be going to 等于什么? be going to doing 还是 to do? 谁能剖析一下 be going todo/be todo/be doing谁能剖析一下 be going to do/be to do/be doing他们的区别是什么 be going to do之外有be going to doing有这个句型么, be to do.be going to do.be doing.will do.有什么区别? be going to do/be doing/will do/be to do等 的区别~ be going to doing这种用法有吗? be going to doing有这个用法吗 be going to do,will be,be doing三种用来表示未来时有什么差别?