题目内容：

a great deal of ,a good many,a plenty of,a mumber of,a quantity of ,quantities of 的区别
最好有例子说明

优质解答

a great deal of 非常多的,大量的；跟不可数名词She has given me a great deal of help.a good many很多的,相当多的；跟可数名词A good many workers were for the bill.plenty of(没有a)充足的,相当多的；跟可数、...