一、“be of+抽象名詞”,這時的of短語相當(dāng)于這個名詞的同根形容詞,作為表語表示主語的性質(zhì)或特征.of的意思是“具有、具備”等,常用于該結(jié)構(gòu)的名詞常見的有
of use=useful；of nouse=useless；of importance=important等.如：
The matter is of great importance.=The matter is very important.
在形容詞前常用very來修飾,在“of+抽象名詞”結(jié)構(gòu)中,名詞前常用great, much等來修飾.再如It is of great importance for college students to master a foreign language.
=It is very important...對大學(xué)生來說,掌握一門外語是很重要的.
二、“be of+集合名詞或其它類型的名詞”,相當(dāng)于belong to或have.of表示歸屬關(guān)系或“有”的意思.如：The army and the people are of one family.
=The army and the people belong to one family.軍民是一家.
三、“be of+物質(zhì)名詞”表示主語是“用某種材料構(gòu)成或制作的”,相當(dāng)于be made of或be built of.如：Our building was of bricks.=Our building was built of bricks.
我們的樓房是磚建的.
四、be of+(表示種類、顏色、年齡、形狀、價格等）名詞,多用來表示主語的特征.這類結(jié)構(gòu)的主語可以是人,也可以是物,其中的of可以省略.常用于該結(jié)構(gòu)的名詞有：kind,age,colour,size,height,shape,type,way,price等.如：
Several of the stamps were of the unusual kind.其中幾張郵票是不同種類的.
The two boys are of the same age.這兩個男孩年齡相同.
She is of a different way of thinking.她的思維方式與眾不同.
These two kinds of article are of the same price.這兩種物品價格相同.
五、“be of+名詞”也可以表示“來源、組成”.如：
He was of a poor peasant family.他出身貧農(nóng)家庭.
The committee is of seven people.該委員會由7人組成.
六、“be of+形容詞的最高級”相當(dāng)于one of.如：
Mr.Wang is of the best teachers in our school.
=Mr Wang is one of the best teachers in our school.
王老師是我們學(xué)校里最好的老師之一.