why don't you 句型
问题描述：
why don't you 句型
Why don't you get car collision insruance before you start driving your new car?
回答1 Because I am a good driver
2 Yes,it's a good precaution.
选哪个?这个问句一定是表示建议的吗?不能用来询问原因吗?
答
1和2 皆可.
具体选择1还是2看上面文意思决定.
Why don't you 的两种用法：
1.Why don't you .一般疑问句
2.Why don't you .表示“你为何不.”＝＝Why not+动词原型 表示一种建议.惯用法