a great many smaller islands是否正确?

问题描述:

a great many smaller islands是否正确?
这种情况,a great many后要加the吗?

应该是a great many smaller islands和a great many of the smaller islands
二者的区别:
a great many smaller islands:很多更小的岛屿
a great many of the smaller islands:这些更小岛屿中的很多个
其中a great many=many,即
many smaller islands和many of the smaller islands