词义用法区分:a good many/a great many/many在如下语境中：( ) the students

词义用法区分:a good many/a great many/many在如下语境中：( ) the students a good many 等于a great many 是否相同? a good many 和 a great many of There are a great many good exercises. a great many的用法如何? a great many 造句 a good many ,a lot of,a great deal of,a great many of 的区别 a great number of/ a good amount of /a great many of/ the nu a good many, a good many of, a great deal o 字典说 a用在many之后对吗?那为什么又出现一个句子:a great many students 如果 a many 和 many a 的用法? a plenty of ,a great deal of ,a good many of,a number of中,哪个