1、Healthy eatingUnit 2Grammar To learn the use of modal verbs 语法讲解建议采用归纳法，如尽可能多的呈现一些相关例句，或可让学生从已学课文中找相应例句，引导学生试着从所观察到的语言现象中总结出语言规则和语法规律。Underline the sentences containing modal verbs in the reading passage and use the function words below to explain the meaning of the modal verbs.Intention Duty Permis
2、sion Possibility Guessing AbilitypossibilitypossibilitypossibilityguessingintentionintentionabilitydutyintentiondutypossibilitypossibilityabilityModal verbs are used to express the speakers meaning of intention,duty,permission,guessing,ability,etc.Look at the following sentences.1.I can well remembe
3、r that there was a time when a deep blue sky (必修1)2.May I ask you some questions about the modern Olympics?(必修2)3.On the football team Im a striker so I have to be able to run very fast.(必修2)Have a look1.I _ well remember that there was a time when a deep blue sky 2._ I ask you some questions about
4、the modern Olympics?3.On the football team Im a striker so I _ be able to run very fast.4.Then by lunchtime they _ all be sold.5.By now his restaurant _ be full of people.canMayhave towouldought togoReady?6.What _ have happened?7.Nothing _ be better,8.Something terrible _ have happened if 9.He _ not
5、 believe his eyes.10.Perhaps he _ go to the library and find out.couldcouldmustcouldshould以上我们已经通过归纳总结和练习对本课的语法内容有了一定的了解，下面就让我们根据之前练习的考察情况进一步选择讲解该语法项的重难点。1.ought to意为“应当；应该”，意思接近于should，但ought to语气更强。You are his brother so you ought to take care of him.2.表示建议或劝告。We ought to make a careful plan befor
6、e we start the work.3.表示推测。Henry ought to be there by now.He left home at six.一、ought to/ought not to【拓展】ought to have done对已发生的情况表示“责备或不满”，表示“本应该做某事”。You ought to have told him not to go alone.否定式为oughtnt to或ought not to。His doctor said to him that he oughtnt tosmoke so much.疑问式是将ought提前。Ought I to
7、 hand in the homework today?反意疑问句的疑问部分用should或ought均可。We ought to go by plane,shouldnt/oughtnt we?have to表示“不得不；必须”，有人称、数和时态的变化。在口语中可用have got to代替have to。Its dark now.I have to go home.否定形式是dont have to，相当于neednt。You dont have to go if you dont want to.疑问式为Do/Does/Did+主语+have to?Do you have to wear
8、 uniforms at school?二、have to/dont have to【拓展】must与have to的区别两者都表示“必须”，但must常表示说话人的主观看法，而have to一般强调客观需要。have to有人称、数和时态的变化，而must 则没有。You must take good care of her.I have lost my pen,so I have to buy one.mustnt表示“禁止；不准”；neednt表示“不必；不需要”。You mustnt tell him about it.Its a secret.You neednt tell him
9、about it.He has known it.【拓展】用must提问时的否定回答用neednt或dont have to。Must I finish my homework now?No,you neednt/dont have to.三、mustnt/needntChoose suitable modal verbs from below to complete the following dialogues.ought/oughtnt to should/shouldnt mustnt neednt (dont)have to will can/cant have toshouldsh
10、ouldntneedntdont have to/neednt/shouldntwillP13 2ought/oughtnt to should/shouldnt mustnt neednt (dont)have to will can/cant have tomustntought toshould根据汉语提示，完成下列英语句子。1.那个粗心的人因超速收到了一张罚单，他本不应该开那么快。The careless man received a ticket for speeding,he _ so fast.2.他们应该明天来，是吗？They ought to come tomorrow,_?
11、3.我必须要参加这次会议吗？你不必。你可以让汤姆替你去。Must I attend the meeting?No,you _.You can ask Tom to go instead.oughtnt to have drivenoughtnt they/shouldnt theyneednt/dont have to4.不该做的事我们都做了，而该做的事都没做。We have done things we _ and havent done things we _.5.我该不该把发生的一切都告诉他？不行！他会生气的。_ tell him all that has happened?No,you
12、 _!He will be angry.ought not to have doneought to have donemustntOught I toReview复习下列情态动词：ought to/ought not to/have to/dont have to/mustnt/neednt.用ought to,ought not to,have to,dont have to,mustnt,neednt填空。1.You _ go across the road when the traffic light is on red.2.You _ buy a gift,but you can i
13、f you want to.3.As students,we _ put more energies into study.4.He _ work overtime in order to finish the task before this Saturday.mustnt/ought not toneednt/dont have toought tohas to5.Tom _ have told me your secret,but he meant no harm.6.The sun is shining brightly in a cloudless sky;it _ be a fin
14、e day today.7.You dont look well.You _ go to see the doctor.8.A dog ran in front of my mothers car and my mother _ stop very quickly.ought not toought toought tohad to1.I _(得接受)your suggestion.2.You _(你不能来这儿)without permission.3.You _ (应当去照顾)your brother.4.I think you _(应当去看)the doctor.II.Translate
15、the following sentences.have to acceptmustnt come hereshould take care ofought to go to see5.The teacher told the students that they _(不应该在课堂上沉默不语)all the time.6.You _(就得不到我的支持)if you do such a thing.7.I waited for the train for two hours at the station this morning.Well,you _(本来没有必要那么早去的).8.“You _(
16、你千万不要再喝酒了),”the doctor warned him.mustnt drink any moreought not to/shouldnt keep silent in classshall not get my supportneednt have set off so earlyIII.阅读下面的对话，按照句子结构的语法性和上下文连贯的要求，在空格处使用合适的情态动词填空。Do you call that a hat?I said to my wife.You _ be so rude about it,my wife answered as she looked at he
17、rself in the mirror.I sat down on one of those modern chairs with holes in it and waited.We had been in the hat shop for half an hour and my wife was still in front of the mirror.needntWe _ buy things we dont need,I remarked suddenly.I regretted saying it almost at once.You _ have said that,my wife
18、answered.I _ remind you of that terrible tie you bought yesterday.mustntneedntneedntI find it beautiful,I said.A man _ never have too many ties.And a woman _ have too many hats,she answered.Ten minutes later we walked out of the shop together.My wife was wearing a hat that looked like a lighthouse!cantcanFinish the exercises in Learning English.