1、考点五虚拟语气一、if条件状语从句中的虚拟语气对事实的假设if从句的谓语动词主句的谓语动词与现在事实相反的假设过去式（be用were）should/would/could/might动词原形与过去事实相反的假设had过去分词should/would/could/mighthave过去分词与将来事实相反的假设过去式（be用were）were to动词原形should动词原形should/would/could/might动词原形If the new safety system had been put（put） to use， the tragedy this morning would nev
2、er have happened.二、含蓄条件句中的虚拟语气有时假设的条件不通过条件状语从句表达出来，而是暗含在某些词或短语中，或隐含在上下文中。最常用的表达有：without， or， otherwise， but for等。Do you have Bettys phone number？No. Otherwise， I should/would/could/might have been（be） able to reach her yesterday.三、表示命令、建议、要求等的动词或名词后的从句中的虚拟语气（should）动词原形1.常见的此类动词有：一坚持（insist），二命令（or
3、der， command），三建议（suggest， advise， propose），四要求（require， request， demand， desire）。He insisted that she was（be） seriously ill and that she （should） be sent（send） to hospital at once.They advise that you （should） carry（carry） a passport at all times.It is suggested that sunscreen （should） be applied（a
4、pply） every one to two hours in a sunny day.提示1.insist作坚决要求，坚持讲时，用来表示一种要求、请求，其后的宾语从句用虚拟语气；而insist作坚持认为，坚持说讲时，用于陈述一种看法、实情，其后的从句用陈述语气。He insisted that he was innocent.他坚持认为他是无辜的。2.suggest作建议讲时，用来表示一种意见，其后的宾语从句用虚拟语气；而suggest作表明，暗示讲时，用于陈述一种实际情况，其后的宾语从句用陈述语气。What he said suggested that he was a fraud. 他说
5、的话表明他是个骗子。2.常见的此类名词有：advice， suggestion， proposal， request， requirement， order， demand， desire等。My suggestion was that schools （should） take（take） necessary measures to keep the children away from violence in schools.He gave the order that all the guests （should） be greeted（greet） warmly as they arr
6、ived.四、固定句式中的虚拟语气现在过去将来wish后的宾语从句过去式（be常用were）had过去分词would/should/could/might动词原形if only引导的条件状语从句或感叹句过去式（be常用were）had过去分词would/could动词原形as if/as though引导的从句过去式（be常用were）had过去分词would/could/might动词原形It is （high）time that.过去式或should动词原形The pills might have helped him， if only he had taken（take） them re
7、gularly.I wish I would/should/could/might climb（climb） the Great Wall with you tomorrow， but Im preparing for the coming exam.She is so keen on beautifying her selfies（自拍照片） that she looks as if she were（be） ten years younger in the photos.1.It is suggested that parents（should） limit（limit） children
8、s screen time.2.If the ambulance had come here sooner last night， the patient would/should/could/might be（be） alive now.3.I wish I were（be） an architect because then I would be able to design my own house.4.They would/should/could/might have arrived（arrive） at lunchtime but their flight was delayed.
9、5.Why didnt you tell me about your trouble last week？ If you had told（tell） me， I could have helped.6.Bob would/should/could/might have helped（help） us yesterday， but he was too busy.7.The requirement is that children（should） be allowed（allow） to read what they want to read.8.Look at the trouble I am in！ If only I had taken（take） your advice！9.Its high time that you got/should get（get） rid of your bad eating habits.10.What a pity！ You missed the sightseeing， or we would/should/could/might have had（have） a good time together.
