a number of 与 the number of
A number of students are here. / The number of students is small.
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说明
a number of = 许多（后接复数，谓语用复数）；the number of = ……的数量（谓语用单数）。这是高考与四六级高频考点。
同类条目
- 主谓一致：就近原则 —— Either you or he is right.
- 现在完成时 vs 一般过去时 —— I have lived here for 5 years. / I lived there in 2010.
- 定语从句：that 与 which —— The book that/which I bought is good.
- 虚拟语气：if 条件句 —— If I were you, I would take it.
- 非谓语：doing 与 to do —— I enjoy reading. / I want to go.
- 倒装：否定词提前 —— Never have I seen such a thing.
- 比较级：as ... as 与 than —— He is as tall as I am. / He is taller than I am.
- 情态动词表推测 —— It must be true. / It can't be true.
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