for的用法：
1、Isn't that enough for you?
那对你来说不够吗？
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.
她作为国务院的`发言人，每晚都会出现在电视新闻中。
4、If your pharmacy doesn't stock the product you want, have them order it for you.
如果药店没有你想要的药品，让他们为你订购。
5、This is the best thing you've ever done – I am so happy for you!
这是你做得最棒的一件事——我为你感到高兴！
6、John, I'm sorry for Steve, but I think you've made the right decisions.
约翰，我为史蒂夫感到难过，但是我想你的决定是正确的。
7、Many new trains have space for wheelchair users.
许多新型列车为坐轮椅者留有空间。
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.
切香肠用的刀放在水槽里。
10、He's soon to make a speech in parliament explaining his reasons for going.
他很快要在议会发表讲话，说明他辞职的原因。