( )people called to ask about her health

( )people called to ask about her health
A.A great many of B.A large number C.A great many D.Large number of

这里为什么要选C呢 能详细解答下么 为什么不能选别的选项呢

一、a great many后直接修饰名词, 名词可以有修饰语, 如:
a great many students
a great many young students

二、a great many of后主要接：
1. 代词：a great many of them
2. 受冠词修饰的名词：a great many of the students
3. 受these, those修饰的名词：a great many of these students
4. 受物主代词修饰的名词：a great many of my students
5. 受所有格修饰的名词：a great many of Tom's students

三、BD的话可以用A large number of 故选C

选C.A great many

a great many后直接修饰名词，
而A great many of+修饰词+名词。
people前没有修饰词，故排除A选项；

A large number 接可数名词，而people是不可数名词，所以排除。
A large number of接可数名词，而people是不可数名词，所以排除。

怎么又是这个问题？？

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