a quantity of和quantities of的区别

quantities of:修饰不可数名词时,谓语用复数，例如Quantities of food (nuts) were on the table；a quantity of:修饰不可数名词时,谓语用单数。例如A large quantity of beer was sold out。

(1)相同点：① 两者都可以修饰可数名词或不可数名词。

②它们的意思都是“大量”

(2)类似：a lot of 和lots of

(3)例句：

①The quantities of each element type will be handy tools for estimating the total effort required.

每种元素类型的数量对于估计所需的总工作量将是便利的工具。

②The government, after this time, did issue contracts to manufacturing companies to produce new quantities of the virus.

在此事件之后,美国政府,和病毒生产企业签了,生产一些病毒的合同。

③And the solution to this equation looks like this where it is written in terms of a quantity called a wavefunction.

这个方程的解法是,看起来像是写成数学符号就是,波函数。

④This kind of migration is tedious and has a high cost in terms of money and time when there is a quantity of data involved.

当涉及到大量数据的时候，这种类型的移植操作单调冗长而且会花费大量的资金和时间。

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