Question

a great number of和a great many of的区别

Answer 1

区别是：
a great number of后直接加可数名词复数，在句中相当于lots of的用法。
a great many of 后面跟限定语再跟名词。

例句辨析：
a great number of
1、It affords a livelihood to a great number of people.
这给许多人提供了生计。
2、A great number of water fowls dwell on the island.
许多水鸟在岛上栖息。
3、A great number of Egyptians are proficient in foreign languages.

很多埃及人都精通外语。

a great many of
1、Chinese translated literature has gained much development in recent years, but the present situation is not so satisfying; a great many of poorly translated books can be found in the market.
近年来，中国文学翻译取得了很大发展，但现状也不容乐观，翻译图书市场充斥着大量粗制滥造的译本。
2、There are a great many of dangerous dam to be urgently mended in China.

我国病险库坝数量多，规模大，急需处理。
3、But as I grew older I questioned a great many of the things that I knew very well mygrandmother who had brought me up had taken for granted.

我是在祖母身边长大的。随着年龄的增长，我对许多祖母视作理所当然的事产生了怀疑。

Answer 2

a great many 跟a great number of可以通用
主要跟你说下a great many 跟a great many of 的区别
a great many后面直接加复数可数名词
a great many of 后面跟限定语再跟名词
例如:
a great many students
a great many of "my" classmates
"a great number of和a great many of的区别" 跟"a great many 跟a great many of 的区别"接近
就是说
a great number of后面直接加复数可数名词
a great many of 后面跟限定语再跟名词

Answer 3

前面后跟不可数名词，后面那个跟可数名词