16.3 混合条件句

　　有时，主句与从句的动作发生在不同的时间，主句从句谓语动词的虚拟语气形式因时间不同而不同，这种条件句叫做混合条件句。例如：

　　If you had asked him yesterday, you would know what to do now. 如果你昨天问过他，今天就知道做什么了。

　　(从句与过去事实相反，主句与现在事实相反。)

　　If it had rained last night(过去), it would be very cold today (现在).如果昨晚下过雨，今天就会很冷了。

　　16.4 虚拟条件句的倒装

　　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, they 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. =Were it to 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。

【英语语法 虚拟语气1】相关文章：

★ 2017高考英语备考复习：语法篇-情态动词和虚拟语气

★ 2016届高考英语专题创新演练提升：板块2 语法运用 第3讲 情态动词和虚拟语气

★ 2017届高考英语一轮复习语法精练：专题9 情态动词与虚拟语气（含解析）

★ 2016届高考英语二轮复习微专题强化训练：1 语法必备 6 情态动词与虚拟语气

★ 天津市武清区杨村第四中学2016届高考英语一轮复习语法专题十《虚拟语气》课件外研版

★ 高考英语语法复习——虚拟语气

★ 2017届高考英语一轮复习语法训练：第十二讲 情态动词和虚拟语气（北师大版）

★ 高一英语语法讲解之情态动词

★ 英语语法 虚拟语气的用法

★ 2017同步攻关高考英语一轮复习学案：语法部分 第6讲 虚拟语气