考点4.of+抽象数=相应的形容词

　　of+geat+抽象名词=very+相应的形容词

　　of+no+抽象名词=not+相应的形容词(or -less， un-)

　　这样的抽象名词主要有：importance，value，use，help

　　The dictionary is of great use/help.=The dictionary is very useful/helpful.

　　The meeting is of great importance.=The meeting is very important.

　　Ginseng is of great medicine value. (西洋参具有很高的药用价值。)

　　Your advice is of great value to us=Your advice is very valuable to us

　　His suggestion is of no use=His suggestion is not useful

　　That program is of great interest to the children

　　=That program is very interesting to the children

　　但是，of+color/age/height/width常用来表示具有同样的颜色、年龄、高度、宽度等等。

　　These two jackets are of the same color.(这两件夹克衫颜色一样。)

　　We're of the same age.(我们年龄一样大。)