单选题
—How many _____ doctors are there in your hospital,David?
—_____ them _____ over one hundred.
题目答案
D
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答案解析
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易混词组 | 意思 | 用法 | 例句 |
a number of | 一些…… | 中心词是这个短语所修饰的复数名词,所以作主语时,谓语动词用复数形式 | There are a number of ants on the ground. 地上有一些蚂蚁。 |
the number of | ……的数量 | 中心词为number,指的是of后边名词的数量,数量是个抽象概念,因此谓语动词用单数。 | The number of the apples is 40. 苹果的数量是40. |
—How many _____ doctors are there in your hospital,David?
—_____ them _____ over one hundred.