重點講解：
1. screw up
弄糟；搞亂；毀壞；
eg. You can't open the window because it screws up the air conditioning.
你不能打開窗戶，那樣空調就不起作用了。
eg. Get out. Haven't you screwed things up enough already!
滾出去。事情給你搞得還不夠糟啊！
eg. Somebody had screwed up; they weren't there.
有人把事情搞砸了；他們沒在那里。
2. be of value
有用的；重要的；
eg. He is a man who is of value to the people.
他是一個有益于人民的人。
eg. This weekend course will be of value to everyone interested in the Pilgrim Route.
這一周末課程對每一個對朝圣路線感興趣的人來說都會很有用。
eg. If you can provide something of value, people will be more than happy to pay for your contribution.
假如你能夠提供一些有價值的事物，人們將很樂意為你所做的貢獻買單。
3. be capable of
有…能力的；能夠…的；
eg. He appeared hardly capable of conducting a coherent conversation.
他好像連話都說不清楚。
eg. The kitchen is capable of catering for several hundred people.
廚房能同時容納數百人進餐。
eg. I had no hesitation in calling the police because I realised he was capable of murder.
我意識到他可能要殺人，所以就毫不猶豫地報了警。