sb is going to be doing sth=sb will be doing sth 与sb will do sth 及sb is going to do sth区别是 前者是将来进行时,强调进行,或者是用进行时态表示语气强烈；后者是一般将来时,仅表示某人要做的事是什么.
而sb is going to be doing sth与sb will be doing sth 的区别,同 sb will do sth 与sb is going to do sth的区别是一样的,be going to有计划的意味,有人为的意思；will是什么事要发生,指发生即一般是自然的、非人为的,如The weather report said that it will rain tomorrow.will的语气往往也不是很肯定、很确切.