the number of mistakes in his composition has been dropped 为

问题描述:

the number of mistakes in his composition has been dropped 为什么用的是has ...请详细回答,
1个回答 分类:英语 2014-11-16

问题解答:

我来补答
“the number of” 是固定用法,表示“...的数量”“...的数目” ,它本身是单数集合词.所以,动词用单数.
“A number of"是另外意思的词组,表示:"一些" 的意思.动词是用复数形式的.在你的这个句子里不能用.
 
 
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