高一英语 Unit14《Festivals 第三课时》精品教案 旧人教版第一册VIP

The Third PeriodTeaching Aims:1.Review the new words appearing in the last two periods.2.Learn to use the modal verbsmust,have to,have got to.Teaching Important Points:1.Learn to guess the missing word according to the given sentence.2.Master the modal verbs correctly.Teaching Difficult Point:How to use“must”,“have to”and“have got to”properly and how to use their negative forms correctly.Teaching Methods:1.Practise and consolidate the words learned in the last two periods.2.Giving examples to explain the difference between “must”and“have to”and the difference between“mustnt”and“dont have to”.3.Making sentences to consolidate the usages of the modal verbs.Teaching Aids:1.a projector 2.some slides3.some picturesTeaching Procedures:Step . GreetingsGreet the whole class as usual.Step . RevisionT:In the last class,we read the passageThe birth of a festival.By reading it,weve learnt something about Kwanzaa,such as the birth of it,the purpose of it,the way of celebrating it,and the seven principles of it.Now I want to ask you some questions about it.The first one:Who created this festival?Ss:Dr Maulana Karenga.T:The second one:Is it a young or an old festival?When was it born?Ss:It is a young festival born in 1966.T:When do people celebrate it?Ss:From December 26(one day after Christmas)to January 1(New Years Day).T:How do people celebrate it?Ss:By lighting a candle each day and discussing one of the seven principles of Kwanzaa.T:Why did Dr Karenga create Kwanzaa?Ss:To celebrate Africa-American culture and history.T:Quite right.In fact we are all creating new festivals every yearfestivals and holidays are always changing and as we celebrate them,we make new history and develop our culture.All the holidays and festivals help us understand who we are,remember where we come from and share our hopes for a happy future.Do you think so?Ss:Yes.T:So much for my questions about the passage.Besides,we learned some words in it.Do you still remember the meanings of them?Lets do an exercise on the screen.(Teacher shows the screen.)Find the right explanation for each word.1.nation2.faith3.determination4.purpose5.generation6.ancestor 7.peace8.trickA.a strong wish to succeed in doing somethingB.large community of people;countryC.belief in something or someoneD.an action meant to deceive(欺骗)someoneE.a reason for doing somethingF.the people born at a certain timeG.a person in your family who lived a long time agoH.quietness and calmT:Now please look at the screen.Find the right explanation for each of the words.I read the word,and you find and read aloud the right explanation to it.OK?Ss:OK.T:Nation.Ss:Large community of people;country.T:Ss:Suggested answers:1B2C3A4E5F6G7H8DT:Well done.Next,well deal with Language study.First,Word study.Then,Grammar.Now open your books at Page.Look at the partWord study.Are you ready?Ss.Yes.T:Here is an exercise for you to do.Choose the best word to fill in each blank.Change the form of the word where necessary.Three minutes later,Ill check your answers.Suggested answers:1.theme,faith,purpose2.nations,generation,determination3.joy,ancestors,birth4.trick,peace,treatedStep . GrammarT:We all know that Dr Karenga wrote seven principles of Kwanzaa in the reading material“The birth of a festival”.Can you tell me what they are?Ss:They are unity,self-determination,living together,purpose,working togetherT:What does“purpose”mean?Ss:We must remember our past and build our future.T:How about self-determination?Ss:We have to build our own lives,create for ourselves,and speak for ourselves.T:Quite right.(Teacher writes these sentences on the Bb.)Now,please look at the blackboard.In these two sentences,“must”and“have to”are both used to talk about obligation.But their meanings are not quite the same.“Must”is most often used to talk about an obligation that depends on the person speaking of listening.“Have to”is generally used to talk about obligations that come from “outside”.Lets look at another two sentences and compare them.(Teacher writes the fallowing sentences on the blackboard:1.We must be back by ten.2.We have to be back by ten.)T:Xiao Yu,can you tell the difference in meaning between them?S1:Yes.The first sentence means that we think it is necessary for us to be back by ten.The second one means someone else thinks it necessary for us to be back by ten,or means that there seems to be no other choice.T:(To the whole class.)Do you agree with him?Ss:Yes.T:Then when can we use“have got to”?Ss:In informal English,“have got to”can be used instead of“have to”.T:Can you give an example?Zhao Ning,you try,please.S2:Its getting late,so Im afraid Ive got to go.(Teacher writes it on the Bb.)T:Very good.Thank you.Now,please look at the pictures on the screen and describe what an army man must do or have to do.(Teacher shows the pictures and ask the students to describe each of them one by one.)Suggested answers:1.You have to keep your hair short.2.You must stand to attention.3.You have to keep your boots clean.4.You have to get up early.5.You must keep fit./You must do exercises.6.You must salute your superiors.7.You have to learn to use a rifle./You must learn to shoot.8.You must keep your equipment clean./You have to clean your equipment.T:Well done.Youve known the differences between them in meaning.Besides,we should know that“have to”has more tenses than“must”.“Must”can only be used to express present and future obligation;past obligation is usually expressed by using“had to”.For example,when I was your age,I had to get up at 5 every morning.But in reported speech,“must”can be used.Look at this sentence:I told him he must make a decision.Have you understood my explanations?(Teacher writes the examples on the Bb while explaining.)Ss:Yes.T:Very good.Now lets go on with the negative forms of them.Li Hua,can you tell us the negative forms of“must”and“have to”?S3:(Teacher writes the negative forms on the Bb:must not=mustnt;do not have to=dont have to)T:Do they have the same meaning?Ss:No.They have quite different meanings.T:Well.Lets compare another two sentences.(Bb:You mustnt tell George.You dont have to tell George.)T:Li Hui,would you like to have a try?S4:Yes.The first sentence means“dont tell George”.The second sentence means“you can if you like but it isnt necessary”.T:Quite right.Instead of“dont have to”,neednt is often used in British English,so we also say“You neednt tell George.”It has the same meaning as “You dont have to tell George.”Can you understand?Ss:Yes.Were quite clear about that.T:OK.Next,lets do some exercises.Step . PracticeT:Now,turn to Page 9.Look at the first exercise in Grammar part.Here are some greeting manners in the table.First you have to decide which are necessary and which are not.Then make sentences using“must”,“have to”or their negative forms after studying the given examples below.A few minutes later,Ill ask some of you to read your sentences to the class.Are you clear?Ss:Yes.Suggested answers:1.When youre talking with someone,you must look into his or her eyes.2.If you meet a friend from China,you dont have to kiss him on the cheek or hug him.3.When a soldier meets his officer,he must salute him.4.When you are invited to a formal party,you must wear clean clothes.5.If you want to show your respect to others,you must take off your hat when you greet them.(After that,teacher goes on to deal with the second exercise.)T:Next,lets do the second exercise.Suppose you are spending the Spring Festival at your grandparents house.Complete the following sentences with“have got to”.First do it by yourself,then exchange your work for comment and correction with your partner.Suggested answers:1.Your school starts tomorrow,so you have got to say“Good-bye”to your grandparents.2.You broke your grandmas favourite vase,so you have got to make an apology to her.3.Your parents went back to work three days ago,so you have got to stay alone at your grandparents house.4.Your grandparents have given you quite a lot of money,so you have got to consider how to spend it.5.You have done your homework all wrong,so you have got to do it again.6.You do not know when you should go to school tomorrow,so you have got to make a call to ask your classmate.7.Your grandma was seriously ill,so you have got to send her to hospital.8.You have not bought the ticket to return to your home,so you have got to wait to buy it the next day.Step . Summary and HomeworkT:In this class,weve reviewed the new words we learned.And weve also learnt to use the modal verbs“m