2016_2017学年高中英语Unit15LearningSectionⅥGrammar虚拟语气课件技术知识.ppt

英 语 · D 必修5 Unit 15　Learning 探究 语法精要 课时 语法专练 课 时 作 业 Section Ⅵ　Grammar 虚拟语气 探究 语法精要 【语法感知】 Ⅰ.用所给动词的适当形式填空 1．If there________ (be) no water on earth，there could be no living things. 答案：　were 2．If I knew Bill’s phone number，I________(call) him about the change of our trip. 答案：　would call 3．I wish I ________(have) enough money to help her finish school. 答案：　had 4．If the weather had been good，we _______________(go) out for a walk. 答案：　would/could/should/might have gone 5．If I___________(leave) sooner，I’d have caught the bus. 答案：　had left 6．—Shall we go to the movie tonight? —No，I’d rather you________(stay) at home with our baby. 答案：　stayed 7．Miss Zhang suggests that we________(hold) a meeting next week. 答案：　(should) hold 8．Without the air to hold some of the sun’s heat，the earth at night________________(be) freezing cold. 答案：　would be 9．The teacher loves her students as if they________(be) her own children. 答案：　were 10．But for the rain，we______________________(have) a nice holiday yesterday. 答案：　would have had 【语法精析】 虚拟语气表示说话人所说的不是事实，而是一种假设、愿望、怀疑或推测，主要用在if条件句、宾语从句、主语从句、表语从句及同位语从句等中。 1．虚拟语气在if条件句中的用法 情况 从句谓语动词 主句谓语动词 与现在事实相反 过去时 would/should/could/might do 与将来事实相反 过去时、were to do 或should do would/should/could/might do 与过去事实相反 过去完成时 (had＋过去分词) would/should/might/could＋have＋过去分词 ①If I had a ticket，I would go to the concert. 如果有票，我就去听那场音乐会。 ②If I were you，I could take his advice. 要是我是你，就可能接受他的建议了。 ③If it were to rain tomorrow，the sports meeting would be put off.如果明天下雨，运动会就会被推迟。 ④If I shouldn’t take the exam tomorrow，I would go to the picnic with you.要是明天不参加考试的话，我就会和你一起去野餐。 ⑤If you had taken my advice，you would not have made such a mistake.如果你听了我的忠告，就不会犯这样的错误了。 (2)在表示命令、建议、要求等一类动词后面的从句中，谓语动词用“should＋动词原形”，should可以省略。 The teacher demanded the composition (should) be handed in tomorrow morning. 老师要求明天早上交作文。 Doctors suggest this kind of medicine be taken after supper. 医生建议晚饭后吃这种药。 (3)在would rather句型中的虚拟语气。 在would rather后面所跟的从句中，也可用虚拟语气。表示愿望，意为“宁愿”“但愿”。其形式为： would rather＋主语＋动词