be going to=什么?
be going to=什么?
be going to表示什么
be going to后跟什么?
be going to be going
be going to 后加什么
be going to do什么时态
be about to 和be going to 有什么不同?
will be doing,be going to do,will do ,有什么差别?be going to leav
be going to be ,be going to have ,will have ,shall have 有什么区
be to .be going to .be going有什么区别?都表示一般将来时啊
be going to be 和 be going to have有什么区别吗?
be going to 等于什么? be going to doing 还是 to do?