重點講解：
1. be determined to do sth.
決心做某事；
eg. I am determined to do it better this time.
我決心這次要做得更好。
eg. The task was difficult , but they were determined to see it out.
這任務很艱巨,但他們決心進行到底。
2. rid of
使…去掉；使…去除；使…擺脫；
eg. You must rid yourself of this melancholy mood.
你一定要擺脫這種憂愁情緒。
eg. The new vaccine may rid the world of one of its most terrifying diseases.
這種新疫苗可能會消除世界上最可怕的一種疾病。
3. mean business
當真的；嚴肅的；
eg. Now people are starting to realise that he means business.
人們現在才開始明白他不是在開玩笑。
eg. I mean business, so you must be careful.
我是認真的，所以你得小心。