Why don't you go for a picnic with us?改为同义句是Why not go for a picinic with us?吗?为什么
问题描述:
Why don't you go for a picnic with us?改为同义句
是Why not go for a picinic with us?吗?为什么
答
why not = why don`t sb do sth
都是一个意思
答
因为 why not = why don't sb
为什么.不.