求if、only if 、as if虚拟语气的用法?
求if、only if 、as if虚拟语气的用法?
其他人气:787 ℃时间:2019-08-18 18:52:15
优质解答
if:从句谓语动词 主句谓语动词与现在事实相反 过去式(be动词用were) Would/could/might/should+do与过去事实相反 Had done Would/could/might/should+have done与将来事实相反 ①过去式 Would/could/might/should+...
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