1.a number of的用法
(1)The research begs a number of questions.
研究绕过了一些问题。
(2)The police rounded up a number of suspects
警方围捕了一些嫌疑犯。
(3)We have lived here quite a number of years.
我们在这儿住了好些年了。
(4)A number of the prisoners we saw are starving
我们看到的一些囚犯快要饿死了。
(5)A number of problems marred the smooth running of this event
许多问题影响了这件事的顺利进行。
2.the number of
(1)The number of business failures has risen.
企业倒闭的数量增加了。
(2)There is to be no limitation on the number of opposition parties.
反对党的数量没有限制。
(3)The first and most stubborn problem was that of reductions in the number of aircraft.
最首要也是最棘手的问题是飞机数量的减少。
(4)International rules stipulate the number of foreign entrants.
国际规则规定了外国参赛者的人数。
(5)The number of managers must double to 100 within 3 years
经理的人数在3年内必须翻倍达到100人。