Question

She has bought some cloth, she ____herself a dress.

这里答案是is going to make，有选项would make，但是
If you go to the western suburbs of the city , you ___a lot of new buildings这里答案却是will see，都是表示将要做的事情，为什么一个是be going to 一个是will

Answer 1

be going to与will两者都可表示将要发生的事、将要去做某事，但它们有如下几点区别：

1. be going to 表示近期、眼下就要发生的事情，will 表示的将来时间则较远一些，如：

He is going to write a letter tonight.

He will write a book one day.

2. be going to 表示根据主观判断将来肯定发生的事情，will表示客观上将来势必发生的事情。

He is seriously ill. He is going to die.

He will be twenty years old.

3. be going to 含有“计划，准备”的意思，而 will 则没有这个意思，如：

She is going to lend us her book.

He will be here in half an hour.

4.在有条件从句的主句中，一般不用 be going to, 而多用will, 如：

If any beasts comes at you, I'll stay with you and help you.

She has bought some cloth, she ____herself a dress.
这里用is going to make，含有“计划，准备”的意思（见区别3）

If you go to the western suburbs of the city , you ___a lot of new buildings.
这是条件从句的主句，所以用will see（见区别4）

希望能够帮到你:）

Answer 2

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