They talked as if they (know) ______ each other for a long time. had known本句关键在于

游客2023-10-06 20

问题 They talked as if they (know) ______ each other for a long time.

选项

答案 had known

解析本句关键在于掌握as if的用法。当as if后面引导的从句中描述的情况与事实情况不相符时，需要用虚拟语气，如果表示与现在情况相反，谓语动词用过去时构成虚拟；表示与过去情况相反时，用过去完成时构成虚拟。本句与过去事实情况相反，所以谓语动词使用过去完成时。

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