那天大约有10%的学生缺席。

　　A number of new houses have been built there.

　　那儿已建了许多新房子。

　　The number of the unemployed is still increasing.

　　失业人数还在增加。

　　A large quantity of money was spent on the bridge.

　　建这座桥花了很多钱。

　　One of my close friends has been abroad for 8 years.

　　我的一个好朋友已在国外待了8年。

　　3．不定代词作主语

主语 谓语动词 either，each(of)，anyone，somebody，everything，no one 等 单数 both/few/many/several (of)等 复数 all/some/

most(of) 指代或修饰可数名词复数 复数 指代或修饰不可数名词 单数 none

(of) 指代或修饰可数名词复数 单、复数均可 指代或修饰不可数名词 单数 　　Each of the books costs five yuan.每本书5块钱。

　　Both of my grandfathers are farmers.

　　我的祖父和外祖父都是农民。

　　All are here now.大家都到齐了。

　　All has been tried.一切都试过了。

　　None of them is/are aware of the danger.

　　他们中没有人意识到危险。

　　None of the money was paid to me.

　　连一分钱也没有付给我。

　　4．并列结构作主语