例如:If I were you, I would not accept his offer.
2、表示与过去情况相反:
从句:If+主语+had+done,主句:主语+should/would/might/could+have done
例如:If I had been more careful, I might have passed that exam.
3、表示与将来情况相反:主句谓语用would / could / might +动词原形,从句谓语用were +动词不定式或should +动词原形。
例如:If I were to do the job, I would not be able to have enough time to study.
虚拟目的状语
1、在for fear that,in case,lest引导的从句中,若用虚拟语气时,从句谓语为: + do。并且should能省略,in case不能省略
She examined the door again for fear that a thief come in.
2、在so that / in order that 所引导的目的状语从句中,从句中的谓语为:can / could / may / might / will / would / should + do。
He goes closer to the speaker so that he can hear him clearer.
虚拟宾语从句
wish后的宾语从句
动词wish后接宾语从句时,从句谓语要用虚拟语气。若要表示与现在事实相反的愿望,从句谓语用一般过去时或过去进行时;若表示与过去相反的愿望,从句谓语用would / could+have +过去分词或者过去完成时had done;若表示将来没有把握或不太可能实现的愿望,用would +动词原形。如果将wish改为过去式wished, 其后that 从句中的动词形式不变。
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