重点讲解：
1. because of 因为；由于；
例句：The train was delayed because of ice on the line.
火车因铁轨结冰而误点。
2. urge sb. to do sth. 敦促；力劝；
例句：They urge the public to cool down.
他们呼吁群众冷静。
3. be willing to do sth. 乐意的；愿意的；
例句：He is willing to have a fling at almost any job.
他几乎对任何工作都喜欢试一试。
4. prevent from doing sth. 阻止；制止；阻碍；
例句：It can prevent the water from sopping in.
这可以防止水的渗透。
5. shut down （使）（工厂、公司等）关闭，歇业，停业；
例句：The shop has shut down because of lack of trade.
那商店因生意萧条而停业。
