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1、Grammarthe Subjunctive Mood虚虚 拟拟 语语 气气Class ThreeQ:Whats the difference between the two sentences?If I am free, I will visit you. If I were a bird, I would fly into the sky. （虚拟条件句虚拟条件句） (真实条件句真实条件句）现在事实相反现在事实相反If I won the lottery If I won the lottery now, I would buy an expensive now, I would buy
2、an expensive car. car. 与现在事实相反If people had paid attention to the environment ,the river wouldnt had been polluted.If I were to go abroad ,I would go to America.将来事实相反将来事实相反时时 间间 If If 条件句条件句主主 句句过去过去had donewould should +have donecouldmight现在现在were /did would should + docouldmight将来将来did / were should dowere to dowould should + docouldMight一、一、If条件句条件句：
