of(……的)

　　He is a friend of mine.

　　Have you got the Complete Works of Lu Hsun?

　　We’re of the same opinion. (be of 赞同)

　　Electricity is of great use in industry and everyday life.

　　(be of use=be useful)

　　Your help is of great value to us.

　　(be of value=be valuable)

　　I often think of the days we spent together. (think of 想起)

　　I read it quite by chance in a magazine. (by chance 偶然)

　　It’s very kind of you to remind me of it.

　　(It’s very kind of sb.

　　remind sb. of sth. 提醒某人某事)

　　The picture reminds me of the time we spent together in Dalian.

　　We’re proud of our son. (be proud of 以……为骄傲)

　　The little boy is afraid of dogs. (be afraid of 害怕)

　　It’s just waste of time.

　　He is ashamed of his past. (be ashamed of 羞耻，惭愧)

　　The village is short of water. (be short of 缺少)

　　I do all these of my own will. (of one’s own 出于某人的意愿)

　　on(在……上)

　　You hit the nail on the head. 你这话击中了要害。

　　Put the book on the shelf， please.

    My mother was born on April 14， 1947.

　　(哪一年用in，具体到某一天用on)

　　He left Beijing for home on the morning of July 2.

　　(in the morning ，具体到某一天的上午、下午、晚上用on )

　　On the eve of their departure， they gave a farewell banquet.

　　(on the eve of 在……前夕)

　　We usually get up late on Sunday morning.

　　On his return he told us about the meeting.

　　They will go on a visit to Asia. (go on a visit=visit )

　　He is here on business. (be on business 做生意)

　　She is away on a trip. (on a trip 旅行)

　　The workers at the airport is on strike. (be on strike 罢工)

　　When we came back， we found our house on fire.

　　(on fire 着火)

　　The professor is making a speech on the current situation.(关于)

　　This house is on sale. (on sale 出售)

　　Who’s on duty today?

　　The girl insists on leaving home and depends on herself for a living.

　　(insist on 坚持 depend on 依靠，依赖)