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大量的
（1）可以修饰可数名词和不可数名词
a lot of=lots of a quantity of =quantities of a mess of=messes of
(2) 只修饰可数名词时用
many; a great / large number (numbers) of A good many(后面没有of) many a ( 后接单数名词，其谓语动词也用单数形式)
（3）只修饰不可数名词时用
a great /large amount (amounts) of ; a great /good deal of much