quantity of的用法
以下两用法均可:
一、与词形保持一致(quantity的单复数,决定谓语动词的单复数): 这种观点认为,不看 a quantity of或 quantities of后面接单数名词还是复数名词,只看 quantity 本身。即:quantity 是单数,谓语动词就用单数;quantities 是复数,谓语动词就用复数。即遵循“语法一致”的原则。例如:
A large quantity of washing machines has been sold.
Agreatquantity of moneywasspentontheproject.
Large quantities of booksweresenttothevillageschools.
Large quantities of sand were washed down the hill by the rain.
二、还有一种比较流行的观点,就是:a(large)quantityof或(large)quantitiesof,其后均可跟不可数名词或复数名词。在句中作主语时,aquantityof接不可数名词时,谓语动词用单数形式;接可数名词复数时,谓语动词用复数形式。quantitiesof后接不可数名词或可数名词复数时,谓语动词都用复数形式。
A large quantity of washing machines have been sold.
Agreatquantity of moneywasspentontheproject.
Large quantities of booksweresenttothevillageschools.
Large quantities of sand were washed down the hill by the rain.