陕西省西安交大阳光中学高中英语 Unit 2 Healthy Eating Grammar导学案（教师版）新人教版必修3(1).doc

陕西省西安交大阳光中学高中英语 unit 2 healthy eating grammar导学案（教师版）新人教版必修3第 课时课题名称时间第 周 星期课型grammar主备课人 目标1. knowledge aims: learn and grasp the usages of modal verb ii 2. ability aims: use modal verb ii correctly and properly.重点make clear about the modal verbs: ought/ ought not to ; should / should not; mustnt ; (dont) have to ;二次备课难点master the usage of the modal verbs自主学习在课文中找出含有情态动词的句子1 2 3 4 5 问题生成记录： 精讲互动 1.ought toshould1) should 和ought to 都为“_”，用于各种人称。ought to 的语气稍重一些。 you ought to (should) follow your teachers advice.2) 表示主语的义务或责任：you should take care of your sister.4) should 和ought to 后面跟动词不定式的完成式, you should/ought to have made the decision a week ago.i shouldnt have made such a foolish mistake. 2. must / have to1).must的用法 表示_义务和必要,主要用于肯定句和疑问句,意思为“必须，得，；由must 引起的疑问句，肯定回答要用_,否定回答要用_或_, 意思是“不必” ； must的否定形式mustnt表示禁止，意思是“_”。如： mustifinishthetaskrightnow? yes, youmust./yes,youhaveto. (no, you neednt. / no, you dont have to. 不, 不必。) 2) haveto的用法a. haveto表示一种_需要，意思是“不得不”。如：b. haveto的否定形式是dont have to, 相当于_。如： they dont have to buy a computer at present. 3. need / dare（观察句子，总结规律）（1）作为情态动词，need常用于 句和 句。e.g. you neednt buy the dictionary, for we have one lying on the desk. need he do his homework first?(2) 作为实意动词，need通常用法是 【注意答语】 -need you go now? -yes, i ./ no, i .（3）dare 用作情态动词，后跟动词原形，主要用于 句, 句和 句。 e.g. how dare she do things like that to me? -dare you catch the mouse? - i darent do that. if you dare say that to our teacher, i would devote for you.4. 表“推测，可能性”的情态动词的用法:5.情态动词+have done 用法总结:达标训练1. i thought you _like something to read, so i have brought you some books. a. may b. might c. would d. must 2. where is my pen? i _it. a. might lose b. would have lost c. should have lost d. must have lost3. i didnt hear the phone. i _asleep a. must be b. must have been c. should be d. should have been4. -there were already five people in the car, but they managed to take me as well. -it _a comfortable journey a. cant be b. shouldnt be c. mustnt have been d. couldnt have been 5. its nearly seven oclock . jack _be here at any moment. a. must b. need c. should d. could6. -did the train arrive in time?-no. it _