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)