be going to do和be doing 都能表将来,区别是什么?will do 和be doing表将来的区别是

be going to do和be doing 都能表将来,区别是什么?will do 和be doing表将来的区别是 be going to表将来、be doing表将来和will/shall+do三者间的区别 将来时态的区别be going to;will do;be doing;be to do;be about to do be doing (现在进行时表将来）和be going to do有什么区别 be going to do 和will do和 be doing都能表将来吗? will,be going to do,be doing表将来 将来时有BE DOING么?be going to do和BE DOING是算在现在进行时表将来? be to do和be doing在表将来的时候用法有什么区别? be going to do 和be doing用法的区别? be doing和be going to do的区别 be going to do和be doing的区别,急, be doing 和will do 和be going to do 的区别