a quantity of+可數(shù)名詞復(fù)數(shù)、謂語動(dòng)詞用復(fù)數(shù);a quantity of+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。
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(shí),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(shí),謂語動(dòng)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Quantities of cash have been withdrawn from the bank.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(shí)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(gè)量。
a quantity of謂語用單數(shù)還是復(fù)數(shù)a quantity of+可數(shù)名詞復(fù)數(shù)、謂語動(dòng)詞用復(fù)數(shù);a quantity of+不可數(shù)名詞、謂語動(dòng)詞用單數(shù)。
若單獨(dú)用quantity作主語,謂語動(dòng)詞用單數(shù)。
如:It is used to emphasize that the quantity is very large。
它用于強(qiáng)調(diào)數(shù)量很大。若該結(jié)構(gòu)變成(large)quantities of…這樣的形式,則當(dāng)它用作主語時(shí),其謂語動(dòng)詞一律用復(fù)數(shù)。
如:Huge quantities of oil were spilling into the sea。大量的石油滲到海里。
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