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1、省略if的虚拟条件句if虚拟条件句的用法 条件句主句与现在事实相反If+主语+were/v-ed .主语+should(would/could/might)+do与过去事实相反If+主语+had done主语+should(would/could/might)+have done与将来事实相反If+主语+were to / should +do主语+should(would/could/might)+do虚拟条件句的从句部分含有were, should, 或had时, 可省略if,再把were, should或had 移到从句的句首,实行倒装。例如:Were they here now, th
2、ey could help us. =If they were here now, they could help us.他们现在在的话,就会帮助我们了。Had you come earlier, you would have met him. =If you had come earlier, you would have met him.你来得早一点,就碰到他了。Should it rain, the crops would be saved. =If it should rain, the crops would be saved.假如下雨,庄稼就有救了。注意:在虚拟语气的从句中,动词b
3、e的过去时态一律用were,不用was,即在从句中be用were代替。例如:If I were you, I would go to look for him. 如果我是你,就会去找他。If he were here, everything would be all right. 如果他在这儿,一切都会好的。典型例题_ to do the work, I should do it some other day.A. If were I B. I wereC. Were I D. Was I 答案C. 在虚拟条件状语中如果有were, should, had这三个词,通常将if省略,主语提前, 变成 were, should, had +主语的形式。