题目内容
13．-What _______the number of workers in your factory？-There are two hundred，and a number of them ________women．（ ）
| A． | are； are | B． | is； are | C． | are； is |
分析 --你们厂子的工人人数是多少？
--二百人．他们许多都是女的．
解答 答案：B．
the number of the students学生的人数，相当于一个整体数字，做主语时，谓语动词用单数，所以句子What _______the number of workers in your factory空格处用is；A number of （若干、许多）+复数名词，做主语时，谓语动词用复数，所以and a number of them ________women空格处用are．故选B．
点评 本题考查了主谓一致原则．解答时注意a number of 与the number of 用法上的区别．
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