M11语法教案.doc

八 年级 英语 科 上 册 M11语法 教案 相州初中 八 年级 英语 备课组 课型 听说课 教案序号：总第 48 个 课题 情态动词用法 集 体 备 课 个性备课 教学目标 掌握情态动词must ，can，need的用法 教学过程 must的用法：1）表示主观的义务和必要, 主要用于肯定句和疑问句中, 意思为 “必须……，得……，要……”；由must引起的疑问句，肯定回答要用must或have to, 否定回答要用needn’t或don’t have to, 意思是“不必”；must的否定形式mustn’t表示禁止，意思是“不能，不许”。 e.g:We must find a good method to learn computer well. —Must I finish the task right now? —Yes, you must. / Yes, you have to. (—No, you needn’t. / No, you don’t have to. ) You mustn’t come here without permission. 2) 表示肯定的猜测，常用于肯定句中，意为 “一定是, 必然……”。 e.g:Your sister must be a doctor in this hospital. ( 对现在的猜测 ) He must be reading newspapers in the reading room now.（对正在进行的猜测） It must have rained last night, for the ground is wet.（对过去的猜测） 2.Can的用法：can的否定形式为cannot，缩写为can’t。 1) 表示能力。I can’t swim. Can you drive？ 注意：can表示能力可和be able to互换使用，且后者有更多的时态，be able to常被用来表示can所不能表示的将来或完成的概念。 They will be able to run this machine on their own in three months. 2) 表示可能性，意思是：可以，可能。 That big cinema can seat 2,000 people. 3) 表示允诺，意思是：可以，能够。 You can have the book when I have finished it. Can I use your pen？ 4) 表示惊异、不相信、猜测等（用于疑问句、否定句或感叹句中），意思是：会，可能。 This can’t be true. Can it be true？ need的用法：1）表示需要，必要，主要用于否定句和疑问句，否定为needn’t, 意为“没有必要”。用need提问时，肯定回答为must,否定回答为needn’t. --Need I stay here any longer? --Yes, you must. ---No, you needn’t. need 还可以作实意动词，此时有人称，数和时态的变化，后多接不定式 He needs to learn more about the girl. 当堂检测： 1.I’m sorry. I ___ go now. My father told me on the phone that my mother was ill. A. can B. may C. have to D. think 2. “Where’s my umbrella?” “It’s fine today. You ___ take an umbrella with you.” A. can’t B. needn’t C. mustn’t D. shouldn’t 3.---I don’t mind telling you what I know. ---You __. I’m not asking you for it. A. needn’t B. mustn’t C. may not D. can’t 4.We hope that as many people as possible ___ join us for the charity show tomorrow. A. need B. can C. must D. should 5.---___ your friend play the guitar? ---Yes, he can, but he can’t play it well. A. Must B. Can C. Should D. Need 6.--Is Mr. Brown driving here? ---I’m not sure. He ____ come by train. A. may B. shall C. need D. must 7.---May I put my bike here? ---No, you ___. You should put it over there. A. couldn’t B. needn’t C. mustn’t D. won’t 8.The baby is too young. You ___ give her bi