a good many,a plenty of,a varienty of,a great deal之间有什么区别?

问题描述:

a good many,a plenty of,a varienty of,a great deal之间有什么区别?

a good many 只修饰可数名词
plenty of 可数不可数都行
a variety of 修饰不可数名词
a great deal of修饰不可数名词
不存在a great deal和 a plenty of,他们是错误的短语.