We hardly sat down when she brought plates of food for us.∧hardly—hadwhen引导的从句中动

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问题 We hardly sat down when she brought plates of food for us.

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答案 ∧hardly—had

解析 when引导的从句中动词采用一般过去式，主句中的动词发生在从句动词之前，应当采用过去完成时。

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