for(为了)

　　After supper I always go out for a walk.

　　(go out for a walk 散步)

　　Thank you for spending so much time listening to me explain.

　　Thank you for spending so much time listening to my explanation.

　　Forgive me for being late. (表原因)

　　I’m sorry for what has happened.

　　The coat is for sale. (for sale 出售)

　　This is a book for you.

　　Whenever she is in trouble， she’ll turn to her parents for help.

　　(be in trouble 处在困难之中 turn to 向某人求助)

　　We left Beijing for Shanghai last week. (leave…for… 动身去)

　　I have studied English for three years.

　　I sold the flat for 100，000 yuan.

　　(flat，apartment 公寓，house 别墅，room 房间)

　　How much do you pay for the coat? (pay for 付款)

　　It’s hard for me to get rid of all the rats. (get rid of 消灭，消除)

　　I’m looking for my book.

　　find(找到)： I’m looking for my book， but I can’t find it.

　　I do this all for your good. (for one’s good 为了某人好)

　　Who are you waiting for? (wait for 等待)

　　They do this for the sake of their mother.

　　(for the sake of 因为)