A:I've got to go home and study.我必須回家讀書。
B:For what?為什么?
A:The test tomorrow.為明天的考試啊!
B:If you don't know it by now, you might as well not bother studying.如果你到現(xiàn)在對考試材料還沒有弄懂的話,你倒不如不用麻煩去學了。