高中英语 Unit 3 Understanding each other Section Ⅳ Grammar Writing学案 牛津译林版选修6-牛津版高二选修6英语学案VIP专享

Section Ⅳ Grammar & Writing虚拟语气(一)语气是一种动词形式，表示说话人的意图或态度。英语中有陈述语气、祈使语气和虚拟语气。虚拟语气表示说话人的主观愿望、假想或建议。一、虚拟语气在条件句中的用法主句条件状语从句与过去事实相反should/would/could/ might＋have＋过去分词had＋过去分词与现在事实相反would/should/could/ might＋动词原形一般过去时(be 动词常用 were)与将来事实相反would/should/could/ might＋动词原形一般过去时/should＋动词原形/were to doIf the new safety system had been put to use, the accident would never have happened.(与过去事实相反)如果新的安全系统已经投入使用，那场事故就不会发生了。We would be back in the hotel now if you didn’t lose the map.(与现在事实相反)如果你没有把地图丢了的话，我们现在就回到旅馆了。Grace doesn’t want to move to New York because she thinks if she were to live there, she wouldn’t be able to see her parents very often.(与将来事实相反)格蕾丝不想搬到纽约，因为她认为如果住在那里，她就不能经常看到她的父母了。 对接高考①If Mr.Dewey ____________(be) present, he would have offered any possible assistance to the people there.如果杜威先生在场， 他就会向那里的人提供任何可能的帮助。 had been 解析：根据本句后面主句中的 would have offered 说明与过去事实相反， 故从句中使用过去完成时。②I ____________(go) to my cousin’s birthday party last night, but I was not available.昨晚我本应该去参加我堂妹的生日聚会， 但我没有空。 would have gone 解析： I was not available 表示的是过去的真实情况， 为含蓄条件， 相当于 if I had been available(如果我有空的话), 此处为与过去情况相反的虚拟语气， 主句应使用“would＋have done”结构。 二、虚拟条件句的特殊情况1．虚拟条件句的省略与倒装若 if 引 导 的 虚 拟 条 件 句 中 含 有 had ， were ， should 时 ， 省 略 if ， 可 以 把had，were，should 放在句首，使用倒装语序。Were it not for the support of the teachers, the student could not overcome her difficulty.如果没有老...