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一、非真实条件句的虚拟语气 情 况 从句的 动词 主句的 动词 例句 与现在事实相反 动词的过去式(be 动词一律用were) would/could/should/might＋动词原形 If I had time，I would attend your party.如果我有时间，我就去参加你的宴会了。 If I saw him now，I would be very happy. 如果我现在见到他，我会很高兴的。 情 况 从句的动词 主句的 动词 例句 与过去事实相反 had＋过去分词 would/could/should/might＋have＋过去分词 You didn't let me drive.If we had driven in turn，you wouldn't have got so tired.你当时不让我开车。如果我们轮流开，你就不会觉得那么累了。 情 况 从句的 动词 主句的 动词 例句 与将来事实相反 动词的过去式；should＋动词原形；were to＋动词原形 would/could/might/should＋动词原形 If it snowed/were to snow/should snow tomorrow，we would take photos.如果明天下雪，我们就照相。 [注意] 1．若条件句中有were，had，should，可把if省略，而把were，had，should放在主语前，形成倒装结构，这种结构主要用于书面语中。 Had you taken my advice，you wouldn't have failed in the examination. 如果你听了我的建议，你就不会考试不及格了。 2．有时主句和虚拟条件从句的动作发生的时间不一致，此时，主句和从句的谓语动词要根据各自所指的不同时间选择适当的动词形式。 | 
