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单选题（共30题，60.0分） 30. (2.0分) before his plane ( ) offA. toB. ofC. takesD. sth

单选题（共30题，60.0分） 30. (2.0分) before his plane ( ) off

A. to

B. of

C. takes

D. sth

题目解答

答案

C. takes

解析

本题考查动词短语"take off"的用法以及主谓一致。解题关键在于：

"take off"是动词短语，表示"起飞"，需用动词形式；
主语"his plane"是单数第三人称，动词需用第三人称单数形式；
排除介词、名词等不符合语法的选项。

选项分析

A. to

错误原因："to"是不定式符号，无法与"plane"构成动词短语；
关联短语："take off"需完整动词形式，不能省略"take"。

B. of

错误原因："of"是介词，与"plane"搭配无意义；
常见误用：混淆介词与动词短语。

C. takes

正确性："takes off"是"take off"的第三人称单数形式，符合主语"plane"的单数第三人称；
句意匹配："Before his plane takes off"完整表达"飞机起飞前"。

D. sth

错误原因："sth"是名词（代词），无法作谓语动词；
干扰性：试图混淆动词与名词形式。

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