a large number of和 large numbers of 后面接可数名词的复数形式，但是谓语动词都接动词的复数形式；the number of后面接可数名词的复数形式，但是谓语动词接动词的单数形式。
They chose us among a large number of students.
他们从大量学生中挑选了我们。
A large number of people have applied for the job.
许多人申请了这工作。
There were a large number of candidates for the job.
有许多求职者申请这份工作。
