2013年GCT英语语法：虚拟语气

　　为了方便考生更好的复习特整理了GCT英语语法：虚拟语气，供大家参考：

　　一 、通过动词形态的变化

　　与现在相反：从句一般过去时–主句would/should+动词原形

　　与过去相反：从句过去完成时–主句would/should + have+ 过去分词

　　与将来相反：从句were + 不定式–主句would/should+动词原形

　　二、should+动词原形

　　1、It is +important/ necessary/ possible/ ridiculous/ urgent/ vital/ proposed等形容词+ that从句, e.g.:

　　It’s necessary that we (should) set out at once.

　　2、表示”提议、建议、请求、命令”(suggest/ insist/ command/demand/intend/order/ propose)等意思的动词所带的从句, e.g.

　　I suggest that he (should) go camping tomorrow.

　　3、在lest, for fear that, in case等词引导的从句中，谓语部分用should+动词原形。e.g.:

　　Grown people should never say or do anything wrong before children, lest they (should) set them a bad example.

　　三、谓语动词提前一个时态(在原来时态的基础上再”过去”一下)

　　1.wish后的宾语从句，e.g.:

　　I wish I had been to the concert last night.

　　I would (had) rather后的句子

　　I’d rather he hadn’t done anything like that.

　　四、谓语动词用一般过去时

　　It’s (high, about) time that…, e.g.:

　　It’s high time that he stopped smoking.

　　五、由as if，as though引导的从句中，表示对现在的怀疑：用一般过去时

　　对过去的怀疑：用过去完成时 e.g.:

　　She looks as if she knew all about it.

　　if only引导的感叹句中，表示与现在相反：用一般过去时

　　表示与过去相反：用过去完成时 e.g.:

　　If only he knew our telephone number!