1、虚拟语气一、定义虚拟语气用来表达说话人的主观假想或愿望，与现实相反的情况。二、If条件句的虚拟时间If从句（谓语形式）主句（谓语形式：3d 1t）现在did/werewould/could/should/might + do过去had donewould/could/should/might + have done将来 did/were were to do should dowould/could/should/might + dol If I were you, I would study hard. (对现在虚拟)如果我是你，我会努力学习。l If I had met you first
2、, I would have fallen in love with you .(对过去虚拟)如果我先认识你，我会爱上你。l If it were to snow tomorrow, I would stay at home.(对将来虚拟)如果明天下雪，我就待在家里。三、含蓄虚拟without，but for, or, otherwise引导含蓄虚拟，主句的用法与If引导的虚拟条件句主句的用法一致。l But for your advice, we wouldnt have avoided making such a mistake.要不是你的建议，我们不会避免犯这样的错误。四、用should
3、 + do表虚拟1、以下动词 一坚持：insist 二命令：order，command 四建议：suggest，advise，propose，recommend 六要求：ask, demand, require, request, urge, desire后that从句谓语动词用（should）do/be done表示虚拟语气l The boss ordered that the work should be finished right now.老板命令立即完成这项工作。注意：有两个单词根据其在具体语境中的意思来判断它是否能用虚拟语气。insist 坚持说（不虚拟） suggest 建议（不
4、虚拟）insist 坚持要求（虚拟） suggest 暗示、表明（虚拟）l He insisted that he didnt kill that cat.他坚持说他没有杀害那只猫。l He insist that everyone (should) make a contribution.他坚持要求每个人都应该做出贡献。2、It be +adj. +that+ （should）do/ be done当形容词为important/ significant/ vital/ essential/ crucial/ necessary/ urgent/ imperative(迫切的)/ natura
5、l/ strangel It is important that the present (should) get admission into the famous university.在场的人都被录取进入著名的大学是很重要的。3、lest/ in case/ for fear that +（should）do/ be done 表“以防，万一”l She set many alarms the previous night in case she (should) be late again.她昨晚设置了很多个闹钟，以防再次迟到。五、wish(希望); if only(要是就好了); a
6、s if/ as though（好像）后的虚拟现在：did/were过去：had done或would/could have done将来：情态动词+dol I wish I could do it much better next time.(将来)我希望我下次可以做得更好。l My uncle always talks as if he were the boss.我的叔叔总是说得好像他是老板。六、句型It is (very/high/about)time that + did/was/were (是做的时候了)l It is about time that he learned to l
7、ook after himself. 他是时候该学会照顾自己了。 真题演练1、 If the party had been so important to him, he_ there yesterday.A. have gone B. would have gone C. had gone D. goes2、 If I should meet you after long years, how should I_ with you?A. greet B. have greeted C. had greeted D. greeted3、I didnt see you at the mornin
8、g. If you had come, you_ our sales manager. A. would meet B. would have met C. will have met D. had met4、_the final exam, I would go shopping this afternoon. A. As for B. Because of C. But for D. Due to5、Having stayed in China for five years, the American teacher can speak Chinese fluently as if he
9、_ a Chinese. A. is B. were C. was D. had been 6、It is high time _ him a severe lesson for being late. A. you give B. you gave C. youll give D. you should give 7、To make our environment cleaner, many people suggest that no smoking _ in public places. A. allow B. be allowed C. was allowed D. allowed8、It is essential that you _train tickets as early as possible before the Spring Festival. A. must book B. will book C. are booking D. book
