含quantities的表示数量的词组与不可数名词和可数名词的复数连用,如 quantities of water,a large quantities of books.
含amount的表示数量的词组只能与不可数名词连用,如 a large amount of suga
large quantities of和a large quantity of两者后面都既能接单数名词和复数名词,large quantities of后面不论接单数名词还是复数名词,名词后的动词一律用复数情况.而a large quantity of后面的动词情况要看所接的名词的单复数来定.
large amounts of 和a large amount of都只能接不可数名词,但是,large amounts of 的动词也同large quantities of后的动词形式既要接复数动词