| unit 12 示范教案( 共5课时）3(人教版高二英语下册教案教学设计) |
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The Third Period Teaching Aims: 1.Review the new words appearing in the last periods. 2.Learn to use the rules of word formation to guess the meaning of the word. Teaching Important Points: 1.Learn to choose proper words according to the contexts of the given passage. 2.Learn to guess the meaning of the words by the meaning of some stems and affixes. Teaching Difficult Points: 1.Master the meanings of the following stems and affixes: mis-=wrong extra-=outside inter-=between sub-=under under-=below over-=too much dis-=not -marine=sea 2.How to guess the meanings of the words according to these stems and affixes. Teaching Methods: 1.Review method to consolidate what we’ve learnt. 2.Practice to make the students learn and master these stems and affixes,and then guess the meanings of the words using what they’ve learnt. 3.Individual,pair or group work to make every student work in class. Teaching Aids: 1.the multimedia 2.the blackboard Teaching Procedures: Step Ⅰ Greetings Greet the whole class as usual. Step Ⅱ Revision T:In the last period we learnt a passage about a French famous writer Jules Verne.Now,who’d like to retell the text? (One student stands up and retells the text in his own words.) T:Very good.It seems that you’ve read the passage again and again. Step Ⅲ Word Study T:In the last period,we learnt some new words.Now,let’s review them.Take a piece of paper and write down the words and phrases when I read them in Chinese.Are you ready? Ss:Yes. T:OK.Let’s begin. (Teacher says the following words in Chinese and students write them down in English:collision,permanent,voyage,escape,on board,fiction,fantasy) T:If you’ve written them down,make a short sentence using every word.After a while,I’ll ask some of you to read out your sentences.(A few minutes later)Have you finished? Ss:Yes. T:OK.Who’d like to make a sentence using the first word “collision”? S1:The plane crashed after a collision with a tall building,killing all the passengers on board. T:Very good.Next word “permanent”.Who will try? S2:Love is a permanent topic for us all. S3:Next month,he is going to go on a voyage across the English Channel. S4:A thief robbed the young lady of her handbag and escaped. S5:All passengers on board are not from the same country. S6:He is fond of science fiction. S7:Not all fantasy can be realized in the future. Suggested answers: 1.fantasy 2.voyage 3.collision 4.on board 5.voyage 6.collision 7.on board 8.escape 9.fantasy 10.permanent Step Ⅳ Word Formation T:As we know,learning the rules of word formation is one of the ways to enlarge our vocabulary.We can guess the meanings of the words using them without looking them up in the dictionary.Please look at the screen. (Teacher shows the following on the screen.) rewrite,unhappy,disappear,impossible,invisible,non-smoker,supermarket,worker,illness,movement,useful,action,cooperate,cloudy,musical T:What do the words mean?Explain how you guess them.Who’d like to do the first one? S8:“Rewrite” means “write again”,because the prefix “re-” expresses “again”.Am I right? T:Right.Very good. S9:“Unhappy”“disappear” “impossible” “invisible” and “non-smoker” mean in turn “not happy” “not appear” “not possible” “not visible” and “people who don’t smoke”.Because the prefixes “un-” “dis-” “im-” “in-” and “non-” all mean “not” and form the negative meanings of them. T:A good job!Let’s go on. S10:“Supermarket” is made up of two parts:“super” and “market”.Market is a place where all kinds of things are sold,and “super” means “more than usual”.So “supermarket” means “超市” in Chinese. T:You’re right.Can you give some other examples? S10:Yes.For example,superman,superstar. T:Very good.Now,who knows the meaning of the word “cooperate”? S11:“Cooperate” is to say “work together”.Because “co-” means “together” or “with”. T:Do you agree with him/her? Ss:Yes. T:That’s right.Do you know the meanings of the rest words? Ss:Yes. (Students begin to say the meanings of them together.Then teacher asks one of them to explain them.) T:Wang Lin,tell me how you guess them. S12:These words have something in common.Their basic meanings don’t change,and changes for them are just their parts of speech.For example “worker” is formed by adding “er” after “work”.It means “people who work”.So if we add “er” to a verb,a noun is formed.If we add “-ness” to an adjective,a noun is formed.After a verb,we can add “-tion” to form a noun,while after a noun,we need to add “-ful” “-al” or “-y” to form an adjective.Is that so? T:Quite right.In this class,we’ll go on with some rules of word formation. (Teacher uses the multimedia to show the following.) mis-=wrong extra-=outside inter-=between sub-=under under-=below over-=too much dis-=not -marine=sea T:Please look at the screen.Study the meanings of these stems and affixes in pairs and then try to give some examples with the stems and affixes.(A few minutes later)Are you ready?(Ss:Yes.)Now,I’ll ask some students to read out the words they’ve written.Any volunteer? S13:Misconduct, extraordinary, international, subsoil,underground, overcharge, disagree, submarine. (Teacher writes these words on the blackboard.) T:Terrific!Do you understand the meaning of each word on the blackboard? (Not all the students understand them.) T:S13,can you explain them? S13:“Misconduct” means “improper behaviour”.“Extraordinary” means “beyond what is usual or ordinary”.“International” is to say “between nations”.“Subsoil” is to say “layer of soil that lies beneath the surface layer”.“Underground” means “under the surface of the ground”.“Overcharge” means “charge(sb.) too high a price”.“Disagree” means “not agree”.“Submarine” means “a ship that can travel below the surface of the sea”. T:Is that clear?(Ss:Yes.)Now,let’s do an exercise.Open your books and turn to Page 12.Look at Word Study,Exercise 1.Match the words and the correct definitions.I’ll give you two minutes to do it,and then I’ll check your answers. 1.E 2.F 3.B 4.C 5.D 6.A T:You’re right.Now,let’s go on with Exercise 2.Guess the meanings of the words in italics,using context clues and what you know about word parts,and then translate each sentence into Chinese.First do it by yourself,and then check your answers with your partner.Finally,I’ll ask some of you to finish the exercise.Do you understand? Ss:Yes. T:(A few minutes later)Have you finished? Ss:Yes. T:Well.Who’d like to do the first one? S14:The word in italics “misbehave” means “behave improperly or wrongly”.Its Chinese meaning is “行为不端”.The whole sentence means “妈妈告诉我在祖母家不要行为不端/不懂规矩”. T:Quite right.The second one.Who can try? S15:The word “subtitle” is formed by adding the suffix “sub-” before the word “title”.“Sub-” means “under”,so “subtitle” means “小标题；译文对白字幕” in Chinese.The Chinese meaning of the whole sentences is “荧屏底端的中文对白字幕帮助我们理解外国 影片”. S16:误解，曲解。 不要误解我，我只不过是想帮你。 S17:互换的。 在许多情况下，单词“fiction”和“novel”可互换。 S18:地铁。 人们喜欢乘坐地铁，因为它比公共汽车快，又比出租车便宜。 S19:超时。 他看上去非常疲倦，因为整个礼拜都在超时工作。 S20：衬裤。 如果你穿着衬裤在公共场合走，人们将会认为你疯了。 Step Ⅴ Consolidation T:Look at the screen,please.(Teacher shows the following on the screen.) Add a proper affix to each of the following words to form another word. 1.______curricular 2.______ dependent 3.______patient 4.______stop 5.______judge 6.______tired 7.______heading 8.______clothing 9.______advantage Suggested answers: 1.extra- 2.in- 3.im- 4.non- 5.mis- 6.over- 7.sub- 8.under- 9.dis- Step Ⅵ Summary and Homework T:In this class,we’ve reviewed some new words appearing in the unit by doing exercises.We’ve also learnt some rules of word formation.By doing so,we can guess the meanings of some words without looking them up in the dictionary.After class,learn the affixes on the blackboard by heart,and look for some reading materials to try guessing the meanings of new words.Besides,don’t forget to prepare for the next period.Time is up.That’s all for today.See you next time. Ss:See you next time. Step Ⅶ The Design of the Writing on the Blackboard Unit 12 Fact and fantasy The Third Period Word formation: mis-=wrong extra-=outside inter-=between sub-=under under-=below over-=too much dis-=not -marine=sea misconduct,extraordinary,international,subsoil,underground,overcharge,disagree,submarine Step Ⅷ Record after Teaching |
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