for的用法：
1、Isn't that enough for you?
那對你來說不夠嗎？
2、I knew he worked for a security firm.
我知道他在一家保安公司工作。
3、She appears nightly on the television news, speaking for the State Department.
她作為國務院的發言人，每晚都會出現在電視新聞中。
4、If your pharmacy doesn't stock the product you want, have them order it for you.
如果藥店沒有你想要的藥品，讓他們為你訂購。
5、This is the best thing you've ever done – I am so happy for you!
這是你做得最棒的一件事——我為你感到高興！
6、John, I'm sorry for Steve, but I think you've made the right decisions.
約翰，我為史蒂夫感到難過，但是我想你的決定是正確的。
7、Many new trains have space for wheelchair users.
許多新型列車為坐輪椅者留有空間。
8、Skis are available for hire on a daily basis.
雪橇可以按天租用。
9、he knife for cutting sausage was sitting in the sink.
切香腸用的刀放在水槽里。
10、He's soon to make a speech in parliament explaining his reasons for going.
他很快要在議會發表講話，說明他辭職的原因。