重点讲解：
1. a while
一段时间；一会儿；
eg. I faltered for a while and was still unable to make a decision.
我踌躇了一阵，还是无法做决定。
eg. After a while, I began to get bored with my job.
过了一段时间，我开始厌烦这份工作。
2. I can't believe
（表示惊奇）难以置信；
eg. I can't believe he got that money honestly.
我不相信他是靠正当手段弄到那笔钱的。
eg. I can't believe I fell flat on my face at the recital.
我简直不敢相信,我的演奏会完全失败了。
3. there's no way
没有可能；没门；
eg. There was absolutely no way that we were going to be able to retrieve it.
我们绝对不可能把它找回来。
eg. There's no way I'm agreeing to that!
这件事我决不同意！
4. go Dutch
各付各的账；平摊费用；AA 制；
eg. They decided to go Dutch.
他们决定各自付帐。
eg. We went Dutch on a meal in the new restaurant in Shaftesbury Avenue.
我们在沙夫茨伯里大道一家新开的饭馆里AA制吃的饭。