a number of用单数还是复数

Question

如题所述

Answer 1

a number of用复数。

A number of是大量、很多的意思，等于a lot of一类，后接可数名词复数或代词，谓语动词用复数形式；The number of意思是……的数字/数目，介词of同其后名词构成介词短语，修饰the number，当它作主语时，谓语动词用单数。

a number of例句如下：

1、Failure of a fire to draw properly can have a number of causes.火炉通风不好可以有很多原因。

2、Profits from his single were to be divided between a number of charities.他单曲唱片的利润将分给几个慈善机构。

3、The urban crisis conflates a number of different economic, political, and social issues.城市危机使若干不同的经济、政治和社会问题合成一个综合的问题。

4、We protect the self by a number of defence mechanisms,including repression and projection.我们通过许多防卫机制保护自我，其中包括情感的压制与投射转移。

5、Staff have been holding a number of events to raise money for charity.员工们已经在举行一些慈善捐款活动。