1、of是介词一般后接名词，代词或动名词，for 同样是介词，后接名词,代词或动名词。意义多为“为了” 。
2、of音标：英 [ɒv; (ə)v] 美 [ʌv; əv] ，释义：prep. 关于；属于；…的；由…组成的。
3、for音标：英 [fə(r); fɔ:(r)] ，释义：为，为了；因为；给；对于；至于；适合于。
拓展资料
of
1、Would you say what you felt was a feeling of betrayal?
你是否觉得有一种被人出卖的感觉？
2、A flock of birds flew towards us slowly from far away.
一群鸟儿从远处朝我们缓缓飞来。
3、We could all do with a cup of tea .
要是能给我们都来杯茶就好了。
4、Marina ate only one slice of bread .
玛丽娜只吃了一片面包。
5、We had almost reached the end of the street.
我们几乎到了街的尽头。
6、He'd been dreaming of her .
他一直梦见她。
for
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！
