a great number of和a great many of的区别

　　a great number of和a great many of意思都是“许多，大量”，且后面都是接复数名词，但是用法上有区别：

1. a great number of后直接跟复数名词，相当于a great many, a lot of或lots of。例如：

   A great number of people agreed with him. 许多人都同意了他的看法。

   There are a great number of books in our school library. 我们学校的图书馆有很多书籍。

2. a great many of 确切的意思是“……当中的许多”，后的复数名词前要有定冠词the, 指示代词these/ those, 形容词性物主代词或名词所有格等修饰语。例如：

   A great many of the people have seen the film. 许多人看过这部电影。

   A great many of their flowers were white.  他们的花多数是白色的。

含义和用法不同。
　　a great number of：多数的，许多；大量的。修饰可数名词复数。表示很多，相当于plenty of、a lot
of修饰可数名词的时候。强调量多。
　　a great many of： 大量；很多； 许多； 许许多多。修饰可数名词表示量多，直接用a great
many 即可；而a great many of表示什么里面的很大部分，它很大程度表示的是比例大。相当于a large part of。

a great many ,a great deal ,a great number of的用法
1.只加可数的复数
a great many （of）
a good/great many books
a good/great many of my books
a number of=many

2.+不可数名词
a great deal of
an amount of=amounts of
3.+不可数名词/可数的复数
a lot of
plenty of (前不加a)

a large quantity of加不可数名词,单数谓语
quantities of 加不可数名词,复数谓语