一、“ (be)+of+名词”结构表达的意义
1. "(be)+of+名词"结构中的名词是抽象名词时,相当于其中名词所对应的形容词的意思，说明被修饰词具有某种特征或属性。常用的名词有use/importance/help/value/interest/quality/service/benefit/necessity等。例如:
I don't want to hear what you are saying. It is of no interest to me.
我不想听你说,我对此不感兴趣。(of no interest=not interesting)
Doing morning exercises will be of benefit to your health.
做早操对你的健康有利。
Coal is of great importance to the development of industry.
煤对工业发展是相当重要的。(of great importance=very important)
2. "(be)+of +名词"结构中的名词表种类、数量、度量等时,表示不同的人或物的共同特征,此时
名词前通常带有冠词。常用的名词有size/kind/type/price/height/depth/width/length/weight/age/shape/colour等。例如:     
We are of the same age. 我们同岁。
The twin sisters are of a size and the skirt fits each of them exactly.
双胞胎妹的身材一样,这件裙子两个人穿都非常合适。
Machines are of different types and sizes.机器有不同的型号和规格。
3. "(be)+of+名词"结构可以表示主语的根源关系,此时的名词多是表示亲属、血统、种族、国籍及出处的名词,常用的名词有family/blood/race/origin等。如:
We are of the same blood. 我们是同一家族。
They are of noble race. 他们出身名门。
二、“ (be)+of+名词”结构的句法功能
weight的用法搭配
1. 作表语。例如:
Don't throw anything that may be of use.
不要把任何有用的东西扔掉。(=Don't throw anything that may be useful.)
Flowers are of many colours. 花的颜很多。
New Zealand wine is of high quality and is sold all over the world.
新西兰葡萄酒质量很高,行销全世界。
  2. 作定语。例如:
Your sister is a girl of wisdom.
你妹妹是一位有智慧的女孩。(=Your sister is a wise girl.)
We don't think there is anything of interest in your pictures. 我们认为你的画并没有什么有趣的地方。(=We don't think there is anything interesting in your pictures.)
3. 宾语补足语。例如:
He found himself of absolutely contradictory points of view.
他发现自己处于完全矛盾的观点之中。
I would like to begin by poingting out that 'traditional skills and ways of life' are not antomatically of one country, but of a culture or community. ——用法是be of +n.表所属
Some technologies, such as weapons of mass destruction, are of negtive impact. ——be of 表所属

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