many 加可数名词，much 不可数名词；
a large deal of、a plenty of和a good supply of 在多数情况下修饰不可数名词，如：a plenty of water, a geat deal of time，不过它们也可以修饰可数名词，如a plenty of men。
扩展资料
一、只能修饰可数名词的词语有:
many, many a(n), a good / great many, a (great / large) number of, scores of, dozens of等。例如:
Scores of people went there in the first few days after its opening.
开张后的头几天,很多人去了那儿。
I have been there dozens of times.
我已去过那儿很多次了。
There’re a number of students reading English in the classroom.
教室里有许多学生在读英语。
Many a student has(=many students have)visited the Great Wall.(谓语动词用单数)
很多学生都游览过长城。
In winter, a good many animals sleep under the snow.
冬天很多动物在雪下冬眠。
注意: many所修饰的复数名词前若有限定词,many 后面要接of, 表示“……中的很多”。 例如:
A great many(of the) graduates have found jobs.
毕业生中很多人已经找到了工作。
