quantity的用法及短語
n.量，數(shù)量; 定量，大批; 數(shù)目; [語音學(xué)、韻律學(xué)] (指元音或音節(jié)的長(zhǎng)短) 音量;
[例句]He had quantity and quality!
他既有數(shù)量,又有數(shù)量!
a large quantity of 和large quantities of的用法區(qū)別
quantities of無論修飾可數(shù)還是不可數(shù)名詞、謂語動(dòng)詞都用復(fù)數(shù).
例如:
Quantities of food (nuts) were on the table.桌子上有許多食品(堅(jiān)果).
a quantity of+可數(shù)名詞復(fù)數(shù)、謂語動(dòng)詞用復(fù)數(shù);+不可數(shù)名詞、謂語動(dòng)詞用單數(shù).即修飾可數(shù)或不可數(shù)名詞均可,作主語時(shí)采取就近一致的原則,其謂語動(dòng)詞通常與短語中of后面的名詞的.數(shù)保持一致.
例如:
A large quantity of beer was sold out.大量的啤酒被售出.
She spent a very large amount of money yesterday. 她昨天花了好大一筆錢。
a number of與可數(shù)、有生命或無生命的名詞連用。如：
The Psident has made a large number of mistakes. 總統(tǒng)已犯了許多錯(cuò)誤。
a quantity of通常與可數(shù)或不可數(shù)、無生命的名詞連用。如：
A vast / large quantity of imported beer has been sold. 已經(jīng)售出了大量的進(jìn)口啤酒。
再者，從上面的例句可知，amount, number和quantity的前面經(jīng)常使用vast, large, small 等表示數(shù)量大小的形容詞來修飾，而這些形容詞前面有時(shí)還會(huì)使用very等程度副詞來修飾。不過，要特別注意的是，在這些用法中，large不可用big 來替代。
短語
quality and quantity 質(zhì)量和數(shù)量
a large quantity of adj. 大量的
small quantity 小量，少量
order quantity 訂貨量;訂購量;訂單數(shù)量
a great quantity of (接可數(shù)或不可數(shù))大量
a small quantity of 少量的
quantities of 許多……
production quantity 生產(chǎn)量
quantity discount 數(shù)量折扣，大批量折扣