aquantities of:修飾不可數(shù)名詞時,謂語用復(fù)數(shù)，例如Quantities of food (nuts) were on the table;a quantity of:修飾不可數(shù)名詞時,謂語用單數(shù)。例如A large quantity of beer was sold out。

quantities of和a quantity of的區(qū)別

quantities of和a quantity of都可以修飾可數(shù)名詞和不可數(shù)名詞，區(qū)別在于：

quantities of在修飾不可數(shù)名詞，并且和后面的名詞一起做主語時，謂語由它決定，也就是用復(fù)數(shù)。

a quantity of修飾不可數(shù)名詞，并且和名詞一起做主語時，謂語動詞由后面的名詞決定，也就是用單數(shù)。

例如：Quantities of energy are saved today. (今天大量的能源被節(jié)約)

A quantities of energy are saved today.

Quantities of cash have been withdrawn from the bank.

(大量的現(xiàn)金已經(jīng)被從銀行取出)

Aquantity of ready-use 35 mm ammunition in clips is also carried.

一批準(zhǔn)備使用35毫米彈藥在剪輯，也獲得通過。

其他時候倆者可互換。

The milk carton, in turn, has a quantity of milk inside it.

=The milk carton, in turn, has quantities? of milk inside it

這盒牛奶，再進(jìn)一步，它里面牛奶有一個量。

quantity相關(guān)短語

fundamental quantity

基本量

relative quantity

相對量，相對值

unknown quantity

未知量，未知數(shù)

variable quantity

可變參量，可變量，變量

complex quantity

復(fù)數(shù), 復(fù)量

constant quantity

n. 1.恒量，常數(shù)

definite quantity

定量