A：You'd better prepare for the examination.
你最好為考試做一下準備。
B：I don't think the exam will be very hard.
我覺得考試不會很難。
A：You should change your attitude, or you will not pass the course.
你應(yīng)該改變這種態(tài)度，不然你無法通過這門課。
B：Maybe you're right. I have been too lazy lately.
也許你說得對。近來我一直很懶惰。