a number of的意思是许多、大量的，它的同义词是many, amount of, a lot of, a great sum of, a great quantity of。
一、a number of 造句
He has a number of books.
他有一些书。
He made a number of inspections.
他对这个地区进行了多次视察。
A simultaneous discharge of a number of missiles.
齐射一定数目枪弹的同时射击
A number of people disagreed.
有几个人不同意。
Interview a number of candidates
对一些候选人进行面谈
A number of things produced; output.
产出，产量生产的东西的数量
To receive(a given number of votes).
得到(一定数目的)选票
A number of possibilities come to mind.
我脑里出现了好几种可能性。
A number of power-operated wells were sunk.
挖了好些电井。
A number of sparrows were hopping about.
有一群麻雀到处跳跃着。
A number of the workers are unskilled.
许多工人技术不熟练
An offer with a number of qualifications.
一项附带许多限制的买卖
二、a number of的解释
a number of
许多, 若干
例句与用法
The bishop conducted a number of confirmations at the service.
主教在仪式上为许多人施行了坚信礼。
A number of cables are needed in this project.
这项工程需要大量电缆。
The Green Party hopes to put up a number of candidates in the General Election.
绿党希望提出若干候选人参加大选。