度人教版必修3Unit 2Healthy eating Period 4Grammar学案 精选教育文档Word格式文档下载.docx

1、t think they ,but I don（4）They ought to go and see Mary tomorrowwill. 他们明天按理说应该去看看玛丽,但是我认为他们不会去的。（此 页 1 第句不宜用should） t he?他现在该走了,oughtn是吗? （5）He ought to go nowought to 用法小结: （1） （2） （3） （4）ought to与should的区别 ought to（5）的否定形式为 2.need Need you go so early?你需要这么早走吗（1）?t.不,I needn不必。 ,YesI must. 是的,我必须

2、走。/No,t have bought it.你没有必要买（它）You needn的。（但已经买了） （2）t need to be so worried.你不必如此担心。 （3）You don（4）Do I need to say my telephone number again?我还需要再说一遍我的电话号码吗?need 用法小结: 页 2 第“” need后接完成时表示。 （2） （3）need用作实义动词时, 3.dare （1）My younger sister dare not go out alone.我妹妹不敢单独出去。（2）If you dare cheat in your

3、exam,I will give you some punishment. 如果你（们）敢在考试中作弊,我就惩罚你（们）。（3）She dares to go there alone.她敢一个人去那里。（4）He did not dare （to） leave his car there.他不敢把车停放在那里。dare用法小结:“”,dare用作情态动词时,具有四个特点dare:敢;敢于第（1） 一, 第二, ;第三, ;第 。 四, dare（2）用作实义动词时, 4.had better d better go to see a doctor.你最好去看看医生。 （1）Youd bette

4、r not disturb him.你最好别去打扰他。 You（2） 页 3 第（3）How had we better go there?我们最好怎么去那儿呢?t we better take an umbrella（4）Hadn?我们是不是带把雨伞比较好?had better 用法小结: （1） （2）如何构成否定句和疑问句: 在否定疑问句或反意疑问句中（3） （二）情态动词表示推测的句型归纳 must（一定,肯定）,may/might（可能,也许）,can/could（可能,通常用于否定句和疑问句中）,should/ought to（应该）常可用来表示推测。1.一般时推测:主语+情态动词

5、（not）+动词原形。（1）He must come from the USA.=It is certain that he comes from the USA.他肯定是美国人。（2）He may/might/could come from the USA.= It is possible that he comes from the USA. 他可能（大概、也许）是美国人。 归纳:2.进行时推测:主语+情态动词（not）+be doing sth. 页 4 第（1）They must be organizing a great performance. 他们一定正在组织一次大型的演出活动。

6、（2）He should be working now.他现在应该在工作。3.完成时推测:主语+情态动词（not）+have done. “”“”“”“”等推测怀疑情态动词+have done责备可表示多种意义。t have told her the truth.你本不该告诉她真相的。You shouldn（1） （2）The ground is wet.It must have rained last night.地面很湿,昨晚肯定下雨了。t have rained last night.地面很,so it can（3）The ground is very dry干,昨晚不可能下过雨的。t

7、have come yesterday.她昨天本不必来的。She needn（4） s late.He might have gone to bed.时间不早了,他也许已经睡（5）It觉了。（6）You could have given more attention to it.你本可以多关心它一点的。情态动词表示推测用法小结: 页 5 第 （1）should/ought to have done t to have done （2）shouldn t/oughtn must have done （3） （4）can t/couldn t have done （5）needn t have d

8、one （6）might/may have done （7）could/might have done 二、语法聚焦自测 1.用should,must,can,need,had better的相应形式填空 go to bed now.You look tired.You （1） My mother cooked a lot of food for me.She has been cooking （2）all the morning. be tired now. She I have just eaten a lot of food for lunch. （3） be hungry now. Y

9、ou sweep it. The floor is clean.You （4） （5）I can manage the shopping alone.You come with 页 6 第 me. not disturb him. （6）You t there.I thought I 2.I searched for my wallet in the bag but it wasn it at home.A.left B.have left D.can have left C.might have left 3.I asleep because it took me a long time t

10、o realize that the telephone was ringing.A.could have fallen B.should have fallen C.must have fallen D.mustnt have fallen 课后提升 小试牛刀挑战一 单项填空? Something big.-What sort of house do you want to have1? s not important. it -Well, be bigthat 页 7 第t t B.neednA.mustn tC.can.wont Dt think we hard for all your

11、 work last week.I don 2.Thank you it without you.A.can manage B.could have managed D.can have managed C.could manage 3.Tom ought not to me your secret,but he meant no harm.A.have told B.tells D.having told C.telling4.I wonder how he that to the teacher.（易错题） A.dare to say B.dare saying D.dared say C

12、.not dare say t see her yesterday.（易错题.5） I didn because she had gone on a trip. , Of course,you t B.may not have A.cant have D.mustn C.cant have 页 8 第根据提示翻译句子 6.你敢在夜晚穿过森林吗?（dare） 7.你本不应该泄露这个秘密的。（ought to） 挑战二 典题在线 ve ordered some pizza,so we worry about cooking 1.I when we get home tired.t B.dare n

13、otA.can D.may not C.needn t I prepared all kinds of food for the picnic. 2.Do you mean we bring anything with us? t t A.canB.mustntC.shan t D.needn 3.My book,The House of Hades,is missing.Who have taken it?A.need B.must D.could C.should t going to rain.t take an umbrella.It isn 4.You needn 页 9 第 do. t know.It Well,I don A.might B.need C.would D.should Why are your eyes so