重点讲解：
1. mean to do sth. 有意；故意；
例句：I'm sorry, Casey, I didn't mean to snap at you like that.
对不起，凯西，我不是有意要跟你凶的。
2. would not do sth. for the world 决不；无论如何也不；
例句：I would not part with her for the world.
我说什么也不会让她离开我的。
3. might as well （几乎）和…一样；
例句：The couple might as well have been strangers.
这对夫妇形同陌路。
4. for the first time 第一次；首次；
例句：Ten years ago, I went to the tropics for the first time.
十年前我第一次到热带去。
5. take away from 拿走；夺走；
例句：Books cannot be taken away from this room.
不许把书从这房间拿走。
6. be supposed to do sth. 应当，应该，须；
例句：Michael, it's Tuesday — you're supposed to be at your piano lesson now!
迈可，今天是星期二——你现在应该在上钢琴课。