not 和dont的用法,not和dont的用法有什么不同

首页 > 时尚 > 作者:YD1662023-11-30 02:44:15

今天辨析一下:why not、why don't

一、用法不同

1、why not:why not直接 do something。

2、why don't:why don’t 人称 do something。

二、句子结构不同

1、why not:why not可以独立成句。

2、why don't:why don't不可以独立成句。

三、时态不同

1、why not:why not没有时态的变化。

2、why don't:why don't结构可以有属时态的变化,例如变为过去why didn't。

—Why didn’t you come to my birthday party yesterday?—____________
A.Excuse me,my friend sent me a flower.
B.Fine,I never go to birthday parties.
C.Ha…ha,I don’t like birthday parties.
D.Sorry,but my wife had a car accident.

Key:D

why not : 意思为:为什么不?当然 ,在口语中也能代替Of Course

Eg:

A:Let's go shopping. 让我们一起去购物吧!

B:Why not? 当然了

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