重点讲解：
1. be supposed to do sth. （按计划或期望）应当，应该，须；
例句：We're supposed to check our luggage in before 5:00.
我们应在5点钟前托运行李。
2. put away 把…收起；放好；
例句：Her bed was crisply made, her clothes put away.
她的床收拾得很整洁，衣服也收起来了。
3. make sense （行为方式）有道理，合乎情理；
例句：In evolutionary terms, this correlation may make sense.
从进化论角度看，这种说法也是有道理的。
4. as well 也；还；
例句：The consumer is getting screwed by cover charges as well.
这名消费者也被诈取了服务费。
