I were a bird！ If only

　　we had listened to their advice. 类型 构成或用法 典句示例 特别 提醒 条件句中有were，had，should时，若省略if，则需把were，had，should放在主语前，构成倒装结构。如果省略的条件句的谓语动词是否定形式，不能用动词的缩略形式。 Were it not for the expense，I would go abroad now.(√) Weren’t it for the expense，I would go abroad now.(×) 虚拟条件句和主句动作若发生的时间不一致，主句和从句的谓语要根据各自所指的不同时间选用适当的虚拟语气形式，这种句子叫作错综时间条件句。 If I were you，I wouldn’t have missed the film last night.(现在→过去) If they had left home in early morning，they would arrive in half an hour.(过去→将来) 有时虚拟条件不用从句，而是通过上下文或用介词短语等表示出来，这种句子叫含蓄虚拟条件句。常用的介词有with，without，but for，otherwise等。 But for your help，we couldn’t have succeeded. Without electricity，life would be quite different today. I was ill that day，otherwise I would have taken part in the sports meet. 类型 构成或用法 典句示例 特别 提醒 当suggest作“暗示，表明”，insist作“坚持认为”表示意见、看法解时，从句要用陈述语气。 Jane’s pale face suggested that she was ill，and her parents suggested that she(should)have a medical examination. as if/though引导表语从句时，若从句叙述的是真实的或出现的可能性很大的情况，从句要用陈述语气。 It looks as if it’s going to rain.(陈述语气)(事实如此) It seems as if the boy has lost his way. 谢谢观看！ 第七讲

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