二、虚拟语气
1.非真实条件句中虚拟语气的用法 if条件从句 从句的谓语形式 主句的谓语形式 表示现在情况 动词过去式(be的过去式用were) should/would/could/might+动词原形 表示过去情况 had+过去分词 should/would/could/might+have+过去分词 表示未来情况 should+动词原形 should/would/could/might+动词原形 动词过去式 were to+动词原形 We would be back in the hotel now if you didn’t lose the map.(2017·北京高考) If it snowed/were to snow/should snow tomorrow,we would take photos. 【名师指津】 若条件句中有were,had,should,可把if省略,而把were,had,should放在主语前,形成倒装结构,这种结构主要用于书面语中。 Were there no modern telecommunications,we would have to wait for weeks to get news from around the world.(2017·福建高考) Should it rain tomorrow,we would have to cancel the football match. 2.错综时间虚拟条件句 If you had worked hard,you would be very tired now.(从句指过去,主句指现在) 3.含蓄虚拟语气 有时假设的情况并不用条件从句表达,而是由otherwise,but,or,without,but for等来引导。 I was so busy then,otherwise I would have gone to help him. I would have come sooner but I didn’t know that they were waiting for me.(2011·天津高考) 4.某些从句中虚拟语气的用法 (1)表示命令、建议、要求、愿望等含义的动词后宾语从句和同位语从句时用虚拟语气,形式为:(should+)动词原形。常这样用的动词有:advise劝告,demand要求,desire渴望,command命令,insist坚决要求,prefer宁愿,urge主张,order命令,recommend 劝告;建议,request要求,require要求,suggest建议,以及这些词的名词形式。 Teachers recommend parents not allow their children under 12 to ride bicycles to school for safety. (2)wish后跟宾语从句时用虚拟语气。 对现在情况的假设: wish+主语+动词过去式(be用were) 对过去情况的假设: wish+主语+had+过去分词 对将来情况的假设: wish+主语+would+动词原形 —How much of the foreign expert’s speech have you understood? —Next to nothing. I wish I had worked harder at English.
【2016届高考英语一轮复习课件:第二部分 语法专项专练专题三 情态动词和虚拟语气(北师大版)】相关文章:
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