本期節(jié)目的topic:做某件事的好處（壞處）是什么
    What's good about making such a plan?
    制定這樣一個計劃有什么好處？
    講解:
    what's good(bad) about sth.，做某件事的好處（壞處）是什么。
    【范例一】What's bad about smoking in public?
    在公共場所吸煙有什么害處？
    【范例二】What's good about that?
    那有什么好的？
    【范例三】Congratulations, son. What's bad about it? Isn't it that you always want to do?
    恭喜你，兒子。有什么問題嗎？這不是你一直想做的事情嗎？