Why not+动词原形。表示“为什么不”， why not也可用来对前面的否定句进行提问。

扩展资料

例句：

Why not tell her you're quitting and have done with it?

为什么不告诉她你打算辞职，尽快把这件事了结了呢？

What you need is a change of scene. Why not go on a cruise?

你需要的是换个环境。为何不乘游轮去旅行呢？

Why not make one by ourselves?

为什么不自己做一个呢？

Why not lie down for a while?

为什么不躺一会儿呢？