thethirdperiod teachingaims: 1。revisethesentencepatternforemphasis。 2。revisethewordsandphraseslearnedinthelastperiod。 3。revisetheusagesofmodalverbs。 teachingimportantpoints: 1。usethewordsandphraseslearntfreelyandcorrectly。 2。usethemodalverbscorrectly。 teachingdifficultpoints: howtousethemodalverbscorrectlyindifferentsituations。 teachingmethods: 1。exercisestohelpstudentsusethelearntwordsandphrasesfreelyandcorrectly。 2。comparativeandinductivemethodstotellstudentstheusagesofsomemodalverbs。 3。exercisestohelpstudentsusethemodalverbscorrectly。 teachingaids: 1。acomputer 2。acourseware teachingprocedures: stepgreetings greetthewholeclassasusual。 steprevision t:inthelastperiod,welearntasentencepatternforemphasis。andialsotoldyoutodoanexercise。nowi’llcheckyourhomework。 (teacheraskssomestudentstogivetheanswersandthenchecksthemwiththewholeclass。) suggestedanswers: 1。itisthehoneybeethatinterestsscientistsmost。 科学家最感兴趣的是蜜蜂。 2。itisprofessorwuthattheywanttoinvite。 他们想邀请的是吴教授。 3。itwasonoctober1stthatnewchinawasfounded。 新中国是在10月1日成立的。 4。itwasnotuntilitwasdeepintothenightthathewenttobed。 他一直到深夜才睡觉。 5。wasitbecausehewasillthatheaskedforleave? 他是因为生病才请假的吗? 6。wherewasitthathetoldyouthenews? 他是在哪里告诉你这个消息的? steplanguagepractice t:inthelastperiodwe’velearntsomenewwordsandphrases。nowlet’sdoanexercisetoseeifyouhaveknowntheirexactmeaning。pleaselookatexercise1。choosetheproperwordorphraseintheboxtotaketheplaceoftheunderlinedwordineachofthefollowingsentences。 (teachergivesstudentsawhiletofinishthisexerciseandthenasksthestudentstogivetheanswers。) suggestedanswers: 1。glasstransparent 2。thinkassume 3。makeclearclarify 4。nearbysurrounding 5。obviousapparent 6。smallcirclesdot 7。enoughadequate t:nowlet’sdoexercise2。imaginethatyouareascientistwhoisstudyingbees。areporterfromthelocaltvstationhasaskedyousomequestionsaboutyourwork。youcanusethewordsinthebracketstoanswerthesequestions。youcanusethedetailedinformationinthepassagetohelpyou。youcanalsoworkinpairstohaveadiscussion。 (teachergivesstudentsenoughtimetoprepareandthenaskssomeofthemtogivetheanswers。) suggestedanswers: r:pleasetellusaboutyourwork。whatisyourtheory?whatisitthatyouwanttoshow? you:ihaveanassumptionthatbeescanuseakindoflanguagetocommunicatewitheachother。iwanttoshowthatbeesconveysomeinformationwhentheyaredancing。 r:isee。soyoubelievethatthebeesuseadancetocommunicate。whatdoesthedancelooklike? you:thebeemovessidewaysinthewaggingdance:thedancerrunsinastraightline,waggingfromsidetoside。thenitturnedinasemicircle,ranstraightagain,andturnedinanothersemicircletotheoppositeside。 r:youhavesetuptwofeedingplaceshere。oneisveryclosetothebeehive,oneisaboutthreehundredmetresaway。whyhaveyoudonethat? you:iassumethatbeesconveymoreinformationthanfood。inordertofindoutwhethermyassumptioniscorrect,ihavesetuptwofeedingplaces。oneisveryclosetothebeehive,theotherisinafarawayplace。 r:thebeesalllookthesametome。howdoyoudistinguishonebeefromanother? you:imarkallthebeesthatcometothenearbyfeedingplaceblueandallthebeesthatgotothefarawayplacered。inthiswayicantellthemaparteasily。 r:howwereyouabletocometoaconclusion? you:ididmoreexperimentsinordertoobtainenoughdatatoprovideanadequateaccountofthebees’behaviour。 r:itmusthavebeendifficulttogetenoughinformation。howdidyouknowifthedancetoldthebeesexactlywherethefeedingplacewas? you:bydoingalotofexperiments,iknewthatthedancecoveyednewsoffood。itwasevidentthatthecircledancetoldthebeesaboutthelocationofthefoodwhilethewaggingdancetoldtheexactdistancetothefeedingplace。 r:whatwasthemostimportantthingyouhavelearntaboutthebees?whatbecameclearasyoustudiedthebees? you:themostimportantthingilearntaboutbeeswasthatbeescancommunicatewitheachotherbydancingindifferentways。asistudiedthebees,itcametolightthatbeesflyamaximumdistanceof3。2kilometresbetweentheirhiveandafeedingplace。 stepgrammar t:we’velearntsomemodalverbsbefore。weallknowthatmodalverbsaredifficulttomasterinenglish。nowlookatthesentencesonthescreen。theunderlinedpartsareallmodalverbs。pleasegivethechineseforeachsentenceandexplaintheuseofmodalverbsinit。 (teachershowsthefollowingonthescreen。) 1。ellenshouldhavekepthispromise。iwonderwhyhechangedhismind。 2。yououghtnottoeattoomuchjunkfood。 3。areyoucomingfordinner? i’mnotsure。imightgotomyaunt’sinstead。 4。therewasplentyoftime。weneedn’thavehurried。 5。nancydarenotgooutaloneatnight。 6。imustfinishthereportbeforethisweekend。 7。icanreadenglishmuchfasterthanbefore。 8。wouldsheliketoborrowmybicycle? 9。sheisrehearsinganewplay。shemustbeverybusynow。 10。it’sgettinglate。i’mafraidihavegottogo。 (bb:need,musthave(got)shallwill) t:now,who’dliketoexplainthefirstsentence? s1:埃伦本来应该遵守诺言的。我奇怪他为什么改变了主意。 shouldisusedtoindicateobligationorduty。thestructurewithperfectinfinitiveisusedtotalkaboutthingswhichdidnothappen,althoughtheyweresupposedto。 suggestedanswers: 2。你不应该吃太多的垃圾食品。 shouldn’toughtn’ttoisthenegativeshortformofshouldoughttoexpressingadvice。 3。你会来吃晚饭吗? 我说不准。或许我得去我姑妈家。 maymightcouldisusedtotalkaboutpossibility。 4。还有充足的时间,我们不必匆匆忙忙的。 needn’tisthenegativeshortformofneed。 themodalverbneed,whichisusedtoexpressnecessity,istodaymostcommonlyusedinnegativestatements。 5。南希晚上不敢独自一人外出。 themodalverbdaremeanshaveenoughcourage。itisusedespeciallyinnegativestatementsandquestions。 6。周末前我必须完成这份报告。 mustisusedtoexpressnecessityinfuturetime。 7。我比从前阅读英语快多了。 canisusedtotalkabouttheabilitytodosth。。 8。她想借用我的自行车吗? wouldisusedinoffersorinvitations。 9。她正排练一出新戏,她现在一定很忙。 musthereisusedtodrawalogicalconclusion。 10。天不早了,恐怕我得走了。 whenthereseemstobenootherchoice,havetoisused。havegottoisusedinspokenenglishinsteadofhavetoinwrittenenglish。 t:canyoutellthedifferencesbetweencanandbeableto? s2:no。 t:canandbeabletobothindicateability,butcanisusedonlyinthepresentindefinitetenseandthepastindefinitetensewhilebeabletoisusedindifferentkindsoftenses。 s3:willyouexplaintheusagesofthetwomodalverbsshallandwill? t:shalli。。。shallwe。。。areoftenusedtomakesuggestions。willyou。。。wouldyou。。。areoftenusedtoindicaterequests。i’llgiveyoutwoexamples。lookattheblackboard,please。 (bb:shallwetakeourswimsuits? willyoupostthisletterforme,please?) t:nowlet’sdoanexerciseinyourtextbooks。 pleaseusethepropermodalverbstofinishthetwodialoguesinexercise3。 (teachergivesstudentssomeminutestoprepareandthencheckstheanswerswiththewholeclass。) suggestedanswers: dialogue1 needn’tdon’can’t;must dialogue2 dare stepsummaryandhomework t:today,we’vereviewedsomenewwordsandphraseslearntinthelastperiod。we’vealsoreviewedsomethingaboutthetext。besides,we’vereviewedtheusagesofsomemodalverbsandhavedonesomeexercisesaboutthem。afterclass,youshoulddomoreexercisesaboutmodalverbsandpreviewthereadingpassageintheintegratingskills。ok。that’sallfortoday。classisover。 stepthedesignofthewritingonthe blackboard unit14zoology thethirdperiod modalverbs: musthave(got)shallwill examples: shallwetakeourswimsuits? willyoupostthisletterforme,please? steprecordafterteaching