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