be going to 和 be doing 表将来 相关的

be going to do 将会...一般用于将来时态
1).I am assuming that the present situation is going to continue.
我认为目前的情况将会继续下去.
2).It's going to cost 200 or as near as dammit.这要花200英镑上下.
3).How did you find out that Burns was going to be promoted?
你是怎么知道伯恩斯将会得到提升的?
4).You must be out of your mind if you think I'm going to lend you 50!
你以为我会借给你50英镑,你准是疯了!
5).I'm just going to check in these books at the library.我要去图书馆还这些书.
6).They are going to move to a new house next week.下星期他们将迁入新居.
7).It looks as if it is going to rain.看来要下雨了.
8).Are you going to America by boat or by plane?你到美国是坐船还是坐飞机?
be doing 主要用于现在进行时态,有时可以用来表达将来时
1).How are you doing with your new boss?你跟你的新上司处得如何?
2).We are doing a pilot study to see if the new product will sell well.
我们正在为这种新产品做试销调查,看它的销路好不好.
3).According to these figures,our company is doing well.
从这些数字来看,我们的公司经营得不错.我指的是 用 be doing表将来 还有前面的问题what are you doing for vacation ？ 意为：你打算在假期做什么？What are you going to do on vacation？意为：你打算在假期做什么？那么你打算做什么就是 what are you doing吗？ what are you doing不应该是你正在做什么吗be doing 主要用于现在进行时态，，有时可以用来表达将来时你打算做什么？ 用 What are you going to do?比较好。