重點講解：
1. a couple of
兩個；幾個；
eg. I've got a couple of questions I'd like to ask you.
我有幾個問題想問你。
eg. The committee is going into recess for a couple of weeks.
委員會打算休會幾個星期。
2. sweep up
掃除；清掃；
eg. He started working for a gallery sweeping up and making the tea.
他開始在畫廊做掃地沏茶的工作。
eg. She was left to sweep up after the party.
聚會結束后她被留下來打掃。
3. dream of
夢想；渴望；
eg. As a schoolgirl, she had dreamed of becoming an actress.
她上學時曾夢想成為一名女演員。
eg. I did once dream of becoming the first woman to captain an ocean liner.
我確實曾經夢想過成為首位遠洋客輪的女船長。