語法問題解答： “why don't you”后面通常跟動詞的原形，構成“why don't you do sth.”的結構，用來提出建議或詢問原因，意為“你為什么不……呢？”。

Why don't you后接什么

1、Why don't you，表示“為什么不”， 后接動詞原形。

2、can't wait /can hardly wait 表示迫不及待，后接to do。

3、how about 后接動詞ing形式，即how about doing？表示詢問意見，“怎么樣？”

具體用法如下：

1、why don't you do sth. 表示為什么不做某事。Why don't you，表示“為什么不”， 后接動詞原形。如:

Why don't you have a cup of hot water？

為什么不喝一杯熱水？

2、can't wait 表示迫不及待，后接to do。

I can hardly wait to see him again.

我迫不及待地想再次見到他.

3、how about 后接動詞ing形式，how about doing表示“干什么，怎么樣？”How about staying at Bart's overnight?在巴特家過夜, 你看怎么樣?

Why don't you例句

1、Why don't you get yourself a car?

你為什么不買輛汽車呢？

2、Why don't you look in on me next time you're in town?

你下次進城順便來看看我好嗎？

3、Why don't you come over to England in the summer?

你為何不在夏天來英格蘭呢？

4、You look hot ─ why don't you peel off?

你看來很熱——為何不脫掉衣服？

5、It's very late now ─ why don't you sleep over?

現在已經很晚了——為什么不就睡這兒呢？