为什么不

• why not?

例句

1. 这是事後想起的--为什么不问问吉姆呢？
   Just as an afterthought why not ask Jim?
2. 为什么不阻止他们污染这条河呢？
   Why not stop them (from) polluting the river?
3. “我明天不能跟你们一起去。＂－－“为什么不能呢？＂
   "I can't go with you tomorrow." --- "Why not?"
4. 是的，为什么不呢？
   Yes, why not?
5. “我们或许再也不能在湖里游泳了。＂－－“为什么不能呢？＂
   "We may never swim in the lake again." --- "Why not?"
6. 为什么不让她想怎么做就怎么做呢？
   Why not let her do as she likes?