北师大版高中英语必修五第9讲：Unit15 Learning-语法篇（学生版）.docxVIP

Unit 15 Learning语法篇____________________________________________________________________________________________________________________________________________________________________1、条件状语从句中的虚拟语气。2、名词性从句中的虚拟语气。3、其他虚拟情况。条件状语从句中的虚拟语气虚拟语气在虚拟条件状语从句和主句中的用法：时间虚拟条件状语从句谓语主句谓语与现在事实相反did(were)would/should/could/might + 动词原形与过去事实相反had donewould/should/could/might + have done与将来事实相反did(were)/were to do/should dowould/ should/ could/ might + 动词原形例：If I had time, I would attend the important meeting.If you had followed my advice, you could have passed the exam.If you came/ were to come/should come tomorrow, we would hold the party.省略if的虚拟条件句：在虚拟条件状语从句中，可省略if，把were, should, had提到句首，变为倒装句式。例：Should he come(=If he should come), I would tell him to ring you up.错综时间条件句如果主句和从句表示的行为所发生的时间不一致时，被称为错综时间条件句。例：If you had followed the doctor’s advice, you would be better now.含蓄条件句句中没有明显的虚拟条件状语从句，而是利用其它手段来代替条件状语从句，如用but for, without, or, otherwise等。例：But for your help, we couldn’t have succeed in the experiment.名词性从句中的虚拟语气在某些表示“命令，要求，建议”等的动词，名词以及形容词存在的主语从句，宾语从句，表语从句，同位语从句中的虚拟语气结构为：(should) + 动词原形。常这样用的动词有：一坚持：insist二命令：order, command四建议：suggest(suggestion n.), advise(advice n.), propose(proposal n.), recommend五要求：require(requirement n.), request, demand, desire, urge例：The graduate insisted that he (should) go to work in the south. （宾语从句）We agreed to order that the task(should) be completed. （同位语从句）His demand is that the boy(should) go with them. （表语从句）It is suggested that the meeting (should) be put off till next. （主语从句）当suggest表示“暗示，表明”之意时，insist表示“坚持认为，坚持说”之意时，后接的宾语从句应当用陈述语气。例：His silence suggested that he agreed with my decision.在would rather后的宾语从句中的虚拟语气宾语从句的谓语如果表示现在或将来要发生的动作，从句用一般过去时；如果表示过去发生的动作，从句用过去完成时。例：I would rather I left now.I would rather you came next month.I would rather he had passed the exam.在wish后的宾语从句中的虚拟语气分类从句谓语与现在事实相反did(were)与过去事实相反had done与将来事实相反would/could/might + 动词原形例：I wish you would go with us tomorrow.I wish I had told him the way to the supermarket.I wish that I