(素推测和虚拟)情态动词复习.ppt

1. People feel shocked that a university student _ do that to a woman. A. should B. may C. must D . Can 2. One of the rules is that every student _ wear school uniform while at school. A. mightB. could C. shall D. will 3. Days later, my brother called to say he was all right, but _ say where he was. A. mustnt B. shouldnt C. wouldnt D. mightnt 4.If you smoke, please go outside. A. should B. may C. must D . can 基础检测： A C C C 情 态 动 词 Period three 复习目标： 掌握情态动词表推测和表虚拟的用法 四. 表推测的用法(1) Must 表推测只能用于肯 定句中： must do (be) （一定做是) 对现在的推测 must be doing (一定正在做）对正在进行动词的推测 must have done (been) 一定已经做过（对过去事情的推测） 考点复习一： 1. It last night, for the road was quite muddy. A.must rain B. can have rained C. must be raining D . must have rained 1. 2. The couple always have diffirent ideas about small things. Listen, his family . must quarrel B. must be quarrelling C. must have quarrelled D. cant be quarreling D B 教师点拨：1、判定句式；2、句中时间词或暗示的语境 四. 表推测的用法(2) cancould 表推测通常用于否定句和疑问句中： cant have done （不可能做过） 对过去的推测 could have done (可能已经） maymight 表推测通常用于肯定句和否定句中： maymight have done (也许已经做过) 考点复习一： 巩固练习1-7题： 1-7 BCACBAC 虚拟用法 1.neednt have done 本来不必做（但实际做了） 2.could have done 那时本来可以（在肯定句 中，不可用can) 3.should have done 本来应该做（实际未做） 4.shouldnt / oughtnt to have done 本不应该 做（实际做了） 考点复习二： 选择并翻译句子，归纳解题步骤和方法： I my homework last night, but I played games all through the night. A.neednt have finished B. can have finished C.should finish D.should have finish 教师点拨：1、理解句意（翻译句子）；2、找 时间词或暗示的语境（过去） 1、表推测的用法 情态动词可表示对 、正在进行和 的推测。 must只能用于 句中表推测，翻译成“一定” 。 can用在否定句和疑问中表推测； maymight用于肯定句和否定句中表推测。 做题时要特别注意句式和语境。 2、虚拟用法： neednt have done 本来不必做（但实际做了） could have done 那时本来可以（在肯定句中，不可用can) should have done 本来应该做（实际未做） shouldnt / oughtnt to have done 本不应该做（实际做了） 做题时要体会语意（翻译）并注意语境（过去） 课堂小结： 题型训练： C 1. He has no idea what the book is about. He have read it very carefully. A.neednt B. shouldnt C. cant D. mustnt 2. It be the postman at the door. Its only six oclock. mustnt B. cant C. wont D. neednt 3. It was surfing the Internet day and night that cost Jim much time he have spent