重点讲解：
1. foot the bill 付账；买单；
例句：Who is footing the bill for her extravagant holiday?
谁会为她奢侈的假日买单？
2. by any means 无论如何；
例句：You must finish the work in time by any means.
你无论如何都要及时完成这项工作S3+j_Pj^t(|&erRo。
3. sth. cost an arm and a leg （价格）昂贵；
例句：A week at a health farm can cost an arm and a leg.
在健身中心呆一个星期的花费会很昂贵+l,%ktA*T&Q。
4. be mad at sb. 生气，恼火；
例句：My brother is mad at me because I hit him.
我弟弟因为我打了他而生气il(kf9d^r,eg。