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(单选题，2分) ____the policeman approaching, the driver brought his car to a halt quickly.A. SawB. Having seenC. SeenD. Seeing

(单选题，2分) ____the policeman approaching, the driver brought his car to a halt quickly.

A. Saw

B. Having seen

C. Seen

D. Seeing

题目解答

答案

D. Seeing

解析

本题考查非谓语动词作原因状语的用法。解题关键在于：

明确句子结构：主句“the driver brought his car to a halt quickly”需要补充原因状语，说明停车的原因。
判断逻辑关系：空格处需表达“因为看到警察靠近”这一原因，强调动作的主动性和同时性。
排除干扰项：注意区分分词的主动/被动形式（Seeing主动，Seen被动）和时间顺序（Having seen强调先于主句动作）。

选项分析

A. Saw：普通动词过去式，不能直接作状语，需依赖主句主语，但此处需独立表达原因，排除。
B. Having seen：现在分词完成式，表示动作先于主句发生，但“看到警察”与“停车”是同时发生的因果关系，排除。
C. Seen：过去分词，表示被动，与“the driver”主动“看到”矛盾，排除。
D. Seeing：现在分词主动形式，正确表达“司机主动看到警察靠近”这一原因，符合逻辑。

关键结论

Seeing 作原因状语，既体现主动动作，又与主句动作同时发生，最能体现因果关系。

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