人教版高二下Unit18Inventions教案精品文档

1、人教版高二下 unit 18 inventions 教案人教版高二下unit18inventions教案period1letslistenandspeak!goalshelpstudentsunderstandthecommonsenseaboutinventions.dolisteningandmakesurestudentsunderstandit.helpimprovethestudentslisteningandspeakingabilities.proceduresleadinginbyguessing.today,wearegoingtolearnsomethingaboutinv

2、entionsthatwilldogoodtohumanbeingsorevensmoothawaydifficultiesbroughtbydisabilities.herearesomeofthem.pleaseguesswhattheyareorwhotheinventorsare.amanwhomademorethan1,000inventionsinhislifeandinventedelectricbulbs2.awomanwhodiscoveredawaytoalterandexpandtherangeofnaturalcottoncolorswithoutusingtintso

3、rdyes3.acomputerthatfitscomfortablyonyournoseandweighslessthanapairofglasses4.amanbornin1876whoinventedaneffectivegasmotorengineandbuiltthefirstpracticalfour-strokeinternalcombustionenginecalledthe“ottocycleengine”5.ashoewhoseheelsmadeelectricitywitheverystepthewearertakeskey:.thomasalvaedison2.sall

4、yfox3.nose-topcomputer4.nicolausotto5.electricshoestolearnmoreaboutinventionspleaseturntopage57orlookatthescreen.task1:lookinganddiscussing.lookatpage57orthescreen.therearefourpicturesandfourdescriptions.readthedescriptionsindividuallyfirstandthenmatcheachpicturewiththecorrectdescription.picture1:el

5、ectricshoespicture2:inflatablebicyclepicture3:ediblechopstickspicture4:nose-topcomputertask2:discussing.nowdiscussthefollowingquestionsinpairs:.whichofthefour“invention”doyouthinkwouldbemoreuseful?why?2.isthereanythingyouwouldliketoinvent?ifso,whatandwhy?task3:listeningandansweringquestions.nowweare

6、goingtolistentodialogue1onthetape,whichisaboutmr.deansnewinvention.listencarefullyandtrytounderstandit.thenyoushouldanswerthefollowingquestions:)whataretheadvantagesofmr.deansnewinvention?2)howdoesitwork?3)whatcanitbeusedfor?4)whydoesthepatentofficernotwanttogivethemanapatent?2.listentothetapeofdial

7、ogue2,whichisaboutmr.scolesinventionandthenanswerthefollowingquestions:)whathasmr.scolesinvented?2)whydidthemaninventit?3)doyouthinkitworks?howdoesitwork?4)whydoesthepatentofficernotwanttogivethemanapatent?task4:speakingup.ingroupsoffouroneistoplaytheroleofaninventortoexplaintotheresthowhisinvention

8、works.thepatentofficershouldlisten,askquestionsanddecidetogivewhichonethepatent.closingbywriting.toendtheperiod,letstrytowritealistofnewinventionswewouldliketomake.letsseewhoseideasarebothcreativeandpractical.period2letsread!goals:improvethestudentsreadingabilities.learnaboutcreativityandthinkingstr

9、ategies.procedureslearninginbydiscussing.lasttimeyouwereaskedtowritealistofyourpossibleinventions.nowweshallseewhoseinventionsarebothcreativeandpractical.t:whatsyourinvention,sa?sa:flowerspeakeramplifiers.t:whatdoesitlooklike?sa:itisthegadgetthatishiddeninavaseorapottedplant.t:howdoesitwork?sa:itsen

10、dsmusicatjusttherightfrequencytovibrateupthestemsandthenbeconvertedintoaudiblesoundbytheentireplant.adevicesuchasacdplayerorradiocanbeconnectedtoit.musicisalsogoodfortheplants,whichareinvigoratedbytheconstantmusicalsounds.t:quitecreative.nowaccordingtotheanswerfromsa,ihavegotsomequestionsforallofyou

11、todiscussingroups.task1:skimmingforthemainidea.weshalllearnmoreaboutcreativitytoday.nowskimthereadingpassagetofindoutthemainideaofeachpart.task2:trueorfalse.mostinventorshavehighiqs.2thethingsweknowcansometimesmakeitmoredifficultforustounderstand.3itsimpossibletolearnhowtobecreative.4thebestwaytofin

12、dagoodsolutionistolookforonegoodanswer.5inventorstrytoavoidfailure.6themorewayswehaveoflookingataproblem,themorelikelyitisthatwecanfindasolution.7mostgoodideasaretheresultofalongprocessoftrialanderror.task3:listeningandreadingaloud.next,wearegoingtolistenandreadaloud.pauseatthecorrectplacesandfindou

13、tthesentencesdifficulttoyouatthesametime.usefulexpressionsuseonescreativity,comeupwithanewidea,havemuchincommon,havedifferentbackgrounds,dowellinschool,gethightestscores,haveahighiq,practicegoodthinkingstrategies,limitonesthinking,thinkout,rephraseaproblem,allowforcreativesolutions,rejectwrongideas,

14、getstuck,movetowardsabettersolution,breakawayfromoldthoughtpatterns,explorenewpossibilities,deepenonesunderstanding,remainhidden,connectto,makeconnections.aprocessoftrialanderror,changetheworldtask4:questionsandanswers.firstworkinpairs,tryingtoanalyzethedifficultsentences,thenputyourquestionstome.we

15、willfocusontheformsandstructuresofthepassages.task5:fillintheblankswiththewordsinthetext.creativityisamatterof_.inordertobemorecreative,weshouldthinkabouthowwethinkand_goodthinkingstrategies.to“thinkoutsidethebox”isaconscious_tobreakawayfromoldthought_inorderto_newpossibilities.achangein_-totakeanot

16、herlookattheproblem-mayleadtogoodsolutionsandnewideas.greatthinkersare_of“makingconnections”andtryto_newandoldideasinasmany_waysaspossible.by_andconnectingideasandobjectsinnewways,creativethinkersareabletothinkofnew_andsolutions.goodideasareno_.theyaretheresultofalong_oftrialand_.ifwewanttodevelopou

17、rcreativity,wecantryusingthesethinkingstrategiestofindnewwaysto_ourlife.closingupbydiscussiontoendthisperiod,letshaveadiscussionofthefollowingquestions:.howcanwebemorecreativeinthinking?2.howdopeoplecomeupwithnewideasfornewinventions?3.howcancreativethinkingbeusedtobetterourstudies?period3letsstudy!

18、goalslearntodefinewordsinenglishwiththeattributiveclause.learnmoreabouttheattributiveclause.proceduresleadingin:readinganddiscovering.readthepassagesandunderlinealltheattributiveclauses.task1:reviewingtheattributiveclause.学习定语从句的几个问题、掌握以上关系代词、关系副词的含义及使用时，要特别注意以下几点：)指物时宜用that的情况：a.当先行词为all,much,littl

19、e,few,none,something,anything,everything,nothing等不定代词时。allthatcanbedonehasbeendone.b.当先行词既指人又指物时。hespokeofthemenandthethinghehadseenabroad.c.当先行词被序数词或形容词的最高级修饰时。thisisoneofthebestfilmsthatihaveeverseen.d.当先行词被thevery,theonly,thelast,any,every等修饰时。thisisoneoftheverybookthatiamlookingfor.e.当先行词是疑问词who

20、,what,which时。whothathassuchahomedoesntloveit?f.关系代词在从句中作表语。maryisnolongerthegirlthatsheusedtobe.2)关系代词as和which都能引导非限定性定语从句代表整个句子的内容，as引导的从句可位于句首或句末，which引导的定语从句则不能位于句首。whichyouknow,heisagoodman.asyouknow,heisagoodman.3)关系副词when,where,why其含义相当于onwhich,inwhichforwhich等，可以互换：thedaywhen/onwhichimethimfi

21、rstwasmay1st.idontknowthereasonwhy/forwhichhedidntcome.47)whose指物时，可以与ofwhich等结构互换，但应注意与冠词的位置关系：thisisthebookthecoverofwhich/ofwhichthecover/whosecoverisblue.5)有时可用代替关系副词。在口语中常省略。thisisthereasonhecamelate.6)先行词是专有名词、整个句子或世界上独一无二的物质名词时，一般用非限定性定语从句修饰。thesun,whichgivesuslightandheat,isverybig.7)在先行词和定语

22、从句之间有无逗号有时会引起名义的变化：hesaidnothingthatmadeherangry.他没说使她生气的话。hesaidnothing,whichmadeherangry.他一言不发，这使她很生气。2、定语从句与强调结构itistheplacewheretheylivedbefore.itisintheplacethattheylivedbefore.第一个句子为定语从句，where指代theplace，在定语从句中作状语，第二个句子为强调结构，强调intheplace,that没有意义，把放回后面句子，句子意思完整。whereisitthathefoundthelostwatch?

23、whereisthewatchhefoundyesterday?3、定语从句中的先行词isthisbooktheonethatyouboughtyesterday?isthisthebookthatyouboughtyesterday?第一个句子中，thisbook是主句的主语，theone是先行词。在第二个句子中this是主句的主语，thebook是先行词。一定要避免出现：isthisbookthatyouboughtyesterday?4、定语从句与同位语从句定语从句相当于形容词，它对先行词起修饰、描述或限制作用，而同位语从句则相当于名词，对其前面的词给予说明或作进一步解释，即说明该词所表

24、示的具体内容。例如：thenewsthatweheardisnottrue.thenewsthathewontheprizeisnottrue.（同位语从句）另:在“havenoidea从句”结构中，其从句都作idea的同位语。例如：ihavenoideawhenshewillbeback.task2:fillinginandrewriting.nowitistimeforyoutodothegrammarexercises1and2onpage61.closingupbyworkingoutawordpuzzle.torelaxed,turntopage62,andworkoutthewor

25、dpuzzleasquickaspossible.thewinnerwillwinalittlegift.period4letsreadandwrite!goalsimprovethestudentsabilitiesofreadingcomprehension.learnaboutthepositiveandnegativeof“scientificmetaphors”.enablethestudentstowritebriefessays.proceduresleadingin:bylifeexperiences.goodmorning,class!livinginaninformatio

26、nage,weareenjoyingvariousinventionsofmoderntechnology.wemakeusesofcomputers,mobilephones,tvsets,andsoon.nowtellmewhatusesyoumakeofallthosemoderndevices.task1:readingforthemainideaofeachparagraph.tolearnmoreaboutmoderntechnologies,turntopage63andfirstreadforthemainideaofeachparagraph.task2:discussing

27、thelanguagepoints.anyproblemwiththearticle.nowinpairstrytofindsomequestionsaboutallthepointsdifficulttoyou.youmayaskmeforhelpifnecessary.task3:listeningandreadingaloud.tounderstandbetterwhatstalkedaboutinthearticle,listentothetaperecordandreadaloudthetextatthesametime.closingupbywritingabriefessay.allright,nowlistentomyquestions:whatwillcomputerslookli