My friend is in hospital now, but he is going to come out tomorrow. 我朋友现在医院，但是他明天就要出院了。

She has borrowed some books from the library. She is going to make a careful study.她从图书馆借了一些书。她打算好好作番研究。

(6)在口语中，表示将要发生的事情时，多用be going to .

What's going to happen? 将要发生什么事？

Is there going to be a party tomorrow evening? 明天晚上有聚会吗？

(7)表示根据已有的、并被注意到的迹象将要发生的事情

They are going to miss the train.他们要赶不上火车了。（说话者注意到他们出发时已经太晚了）

Look at those dark clouds; it's going to rain.看那些乌云，要下雨了。

(8).be going to可用于表示将来时间的条件状语从句，will却不能。

If he is going to participate in the competition, he'd better get prepared.如果他打算参加这个竞赛，他最好做好准备。

If we are going to start early, 5 o'clock is ok. 如果我们计划早出发，5点就可以。

(9).will 可用于表示意愿、拒绝等的条件状语从句中。

If Tom won't come, we will lose the game.如果汤姆不愿意来，我们将输掉这场比赛。

If he will do something useful, he will save the boy.如果他愿意做些有益的事，他会就这个男孩的。

【合作探究】

a. Are the following sentences making a prediction or talking about an intention?

1. "you'll catch a bad cold," said his mother.

"I'll be fine," said Zhou Kai, as he opened the door.