必修三Unit2语法学案情态动词II.doc

Modal Verbs 语法学案: 情态动词 制作时间：2012-4-2-04-12 制作人： 学习内容: 情态动词need, have to, ought to 学习目标: 掌握本学案出现的这几个情态动词的基本用法, 包括need 作为情态动词 和实义动词的区别, have to 和must 的区别等【结构化预习导读】1. 回顾情态动词的特点:2. 将下列句中的情态动词标上下划线, 并将句子翻译成中文a. You ought to be more careful next time.b. You neednt come if you are busy. c. I have to get up before 6:00 every day. d. - Need I tell him everything? - Yes, you must./ No, you neednt. 【协作指导】. need1. 情态动词need 的词义：_ 情态动词need 的否定形式 : _2. 翻译下面的句子, 并思考need 在哪几句中是情态动词,哪几句中是实义动词1) - Need I come tomorrow? - Yes, you must. / No, you neednt. 2) You neednt pay for it. 3) The house needs repairing. 4) We need to help him. 5) He needs a good rest. 总结情态动词 need 的用法: Question : 当need 作实义动词和情态动词时, 区别在哪? . have to 1. 情态动词have to 的词义 : _情态动词have to 的否定形式：_2. 思考: 之前学过的哪个情态动词有相似的含义呢? _3. 翻译下面的句子，并注意have to 的用法a. I have to leave now. Its 12:00. b. He had to quit school when he was 5 years old. c. You dont have to worry about me. d. Every college student has to know how to use computers. Question: 情态动词have to 和 must 区别在哪? . ought to 1. 情态动词ought to 的词义 : _情态动词ought to 的否定形式：_2. 思考：之前学过的哪个情态动词有相似的含义呢？_ 3. 翻译下列句子，并思考句中情态动词的作用a. You ought to be more careful next time. b. Prices ought to come down very quickly. c. You oughtnt to let out the secret. 总结 ought to 的基本用法：【多元拓展】 情态动词+ have done1. neednt have done “本没必要做某事 （实际上已经做了）”小练笔/翻译：你本来没有必要做这件事。2Ought to have done “本应该做某事（实际上没做）” Ought not to have done “本不应该做某事（实际上却做了）”小练笔/翻译： 你昨天本应该来的. 你昨天本不应该来的. 【训练单】一单项选择1. - What sort of house do you want to have? Something big? - Well, it _ be big thats not important. (08年 陕西)A. mustnt B neednt C cant D wont 2. - What do you think we can do for our aged parents? - You _ do anything except to be with them. (07 重庆) A. dont have to B oughtnt to C. mustnt D. cant 3. As you worked late last night, you _ have come this morning. (06 全国1) Aneednt B cant C mustnt D maynt 4Some aspects of a pilots job _ be boring, and pilots often _ w