the number of mistakes in his composition has been dropped 为

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：英语作业时间：2024/07/04 22:15:30

the number of mistakes in his composition has been dropped 为什么用的是has ...请详细回答,

“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.

the number of mistakes in his composition has been dropped 为 ______ in such a hurry, his composition has many mistakes Written in a hurry,his composition is full of mistakes A third of his composition has been corrected. |correct the mistakes in the composition| 英语翻译1The number of books in the library has been going down. The number of violent crimes in the United States dropped si [11/17] |correct the mistakes in the composition| [11/19] |correct the mistakes in the composition| [11/18] |correct the mistakes in the composition| [11/22] |correct the mistakes in the composition| [11/16] |correct the mistakes in the composition|