You'll fair your next exam unless you start to work hard at your studies now
问题描述：
You'll fair your next exam unless you start to work hard at your studies now
You'll fair your next exam unless you start to work hard at your studies now.为什么是unless?The party ended up with a beautiful song.为什么是ended up?
答
You'll fail your next exam unless you start to work hard at your studies now.为什么是unless?------因为unless== if- - -not == You'll fail your next exam IF you DON'T start to work hard at your studies ...