a great many of和a great many的区别：含义不同、用法不同、强调重点不同。a great many of的含义为“许多”，后面主要接代词以及受冠词修饰的名词；a great many的含义为“大量”、“众多”，后面可直接修饰名词。
一、a great many of的含义及用法
a great many of意为许多，后面主要接代词以及受冠词修饰的名词。
例句：There are a great many of Robert's friends here, even in winter.
虽然时值严冬，还是有许多罗伯特的朋友赶来了
A great many of them like American English better.
他们中的许多人喜欢美国英语胜过英国英语。
A great many of the books in the library are new.
图书室的书中有相当一部分是新的。
A great many of experts and scholars do a lot of studies on it.
许多专家和学者都对其进行了大量的研究工作。
English is characteristic of a great many of synonymies.
英语中有很多同义或近义词语，是英语语言的一大特点。
Shyness is the cause of much unhappiness for a great many of people.
对许多人来说，羞怯是造成很多不愉快的原因。
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。
二、a great many的含义及用法
a great many意为许多;大量;众多。
例句：We have a great many things to do at present.
我们当前有许许多多事要做。
I knew I was running a great many risks.
我知道我正担着很多的风险。
They asked a great many questions about England
他们问了一大堆有关英格兰的问题。
He knows a great many people in this city.
他在这城里认识的人非常多。
It's a great many years since we met last time.
上次我们分别后已经好多年过去了。
Our institute has ordered a great many instruments from the company.
我们学院向该公司订购了不少仪器。
