八年级英语下册Unit2Water教案新版牛津上海版.docx
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八年级英语下册Unit2Water教案新版牛津上海版
U2Water
Thefirstperiod
Teachingaims：
Introducethetopicwater.Askstudentstoworkinpairsforafewminutes,andtowritedownanythingtheyknowaboutwater.Ask3studentstotelltheiranswersandwritethemdownontheblackboard.Thendiscusstheirideasbrieflyanddotheexercises.
TeachingImportantPoints:
Trytoknowsomethingaboutwater
TeachingProcedures:
1:
AFreeTalk
Whatdoyouknowaboutwater
*Peoplecanlivewithoutfoodformorethanamonth,buttheycan’tlivewithoutwaterformorethanweek.Losingmorethan20%ofthenormalwatercontentofourbodieswillresultinapainfuldeath.
*About65-70%ofourbodiesarewater,soitisimportantforustodrinkalotofwater.Eachday,anormalpersonwilldrinkabout2.4litersofwaterorotherdrinks.InAmerica,theaveragepersonwilluse260litersofwateradayandonaverage,eachpersonwilldrink60,600litersofwaterinhis/herlife.
*Somepeoplebelievethatouremotionsandmentalstabilityareaffectedwhenthereisafullmoonbecausethegravitationalpullofthemoonaffectsthewaterinourbodiesinthesamewayasitaffectstheoceantides.Legendssaythatwerewolvesappearwhenthereisafullmoon.
*Youneedmorewaterduringandafterexercisebecauseyoulosewaterbysweatingandyouneedtoreplacethewaterthatislost.
*Waterfreezesat0℃（32℉）.Whenitfreezes,itchangesintoice.Waterboilsat100℃（212℉）whenitchangesitsformintoagas,becomingsteam.
2:
Lookandthink
*Choosethewriteanswer
1Youcouldlivewithoutwaterforafew______.
adaysbweekschours
2Yourbodyneedsabout______litersofwaterdaily.
atwobfourceight
3Whenyouexercise,theamountofwateryouneed_____.
aincreasesbdecreasescremainsthesame
4Whenyoufreezewater,itbecomesa_______.
aliquidbsolidcgas
5About_______oftheearthiscoveredbywater.
aonethirdbonehalfctwothirds
6Thescientificsymbolforwateris________.
aH2ObHO2cH2O2
*Usethepicturetoputthesesentencesinthecorrectorder.
（）Itflowstothesea.
（）Itrunsintostreamsandrivers.
（）Itrisesfromtheseatothesky.
（）Waterfallsfromthecloudsasrain.
（）Itfallsasrainagain.
Homework:
Previewthetext:
Watertalk
Thesecondperiod
Teachingaims:
1Trytounderstandthewholelessonandreaditfluently.Thetoneandpronunciationshouldbebasicallyright.
2Learnthenewwordsandphrases.
Teachingaids:
Multimediaequipment
TeachingImportantPoints:
Howtounderstandthetestcompletely.
TeachingDifficultPoints:
TeachingProcedures:
1:
AFreetalk
（AsktwoSstotalkaboutsomemeasuresweusetosavewaterandsaythefollowing.）T:
Verygood.Thankyouforyourperformance.
Wehavelearntthatwaterisveryimportantandwedon’thaveenoughwaterintheworld.Ifwedon’thavewaterinourdailylife,thesituationwillbeterribleandweallwilldie.Somepeopleinotherplacesaresufferingfromlackofwater,suchasAfricanpeople.Weshouldtreateverydropofwaterseriouslyandshouldnowasterevenadropofwater.
ShowthetextonthescreenthengivebriefintroductiontothestudentsandthenletSsreadthenewtextaftertherecording.
2:
learnsomenewwords.
1brushn.刷子，毛刷
v.刷，擦，拂拭Webrushourteethwithatoothbrusheveryday.
2pourv.灌注，倾泻，涌入，流，倾盆大雨
pouroilonthefire火上加油
Tearspouredfromhereyes.
Peoplepouredintohehall.
Pleasepourmeacupoftea.
At5o’clockworkerspouredoutofthefactories.
Itwaspouring.
3sinkn.水槽
Ileftthesoapbythesideofthesink.
v.使…下沉
Theshipissinking.
4vanishv.消失
Forestsarevanishingfromourland.
5drainn.排水管
Yourkitchendrainhasbecomeblockedbytealeaves.
v.排去
Thewaterdrainedawayslowly.
6freezev.（使）结冰，凝固
Theterriblenewsfrozemyblood.
freezingadj.极冷的
frozenadj.冻结的frozenfood
7impatientadj.不耐烦的，没耐心的opp.patient有耐心的
I’mgettingimpatientbecauseI’vewaitedforanhour.
patiencen.耐心，容忍
Ihavenopatiencewithhimagain.
8obeyv.服从，顺从，听话
Theyrefusedtoobey（theorder）.
9faintadj.微弱的
Didyouhearthefaintmoanjustnow?
10floatadj.漂浮，飘浮
Woodfloatsonwater.
11comfortablyadv.舒适的，舒服的
comfortableadj.安乐的，舒适的
comfortn.慰藉，安乐
Ifeelverycomfortableinthischair.
Thelovelybabywasacomforttoher.
12viewn.景色，风景
Thehousehasaviewoverthesea.
n.看法，观点
Whatisyourviewonschoolpunishments?
13speedv.加速
speedup
n.速度
ataspeedof80milesanhour
14nodv.点头
Shenoddedtoshowthatsheagreedwithme.
n.点头
Hegreetedmewithanod.
15relaxv.松弛，放松，休息
Afteradayofhardwork,Irelaxedathome.
16puzzledadj.困惑的，疑惑的
puzzlev.（使）迷惑，（使）为难，迷惑不解
n.难题，迷
acrosswordpuzzle
Iwaspuzzledhowtodoit.
Theirstrangerelationshippuzzlesme.
17treatmentn.治疗，处理
Histreatmentoftheanimalwascruel.
hardtreatment:
虐待beundertreatment：
在治疗中
treatv.对待，处理
18thoroughadj.完全的，彻底的
We’dbetterhaveathoroughcleaningtowelcometheChineseNewYear.
thoroughlyadv.完全地，彻底地
WehavecleanedthehousethoroughlytowelcometheChineseNewYear.
19chemicaln.化学制品
Theyaddedafewchemicalstocleanupthewater.
chemicaladj.化学的chemicalchange
chemistryn.化学Sheisoutchemistryteacher.
20sewagen.污水
Wecan’tletoutsewagebecauseitwillpollutethewater.
21plantn.工厂，仪器
Whentheplantcloseddown,manyworkerslosttheirjobs.
n.植物
v.种植
22pumpv.抽水
Canyouhelptopumpthewaterfromthewell?
Theheartpumpsblood.
n.抽水机，打气筒
23preciousadj.珍贵的，宝贵的
Nothingismorepreciousthanfriendship.
Thebeautifulvaseisveryprecious.
24weirdadj.怪异的，奇怪的，不可思议的
Tomhadsomeweirdideas.
3:
Practice
Playthetapeforstudentstolistenandrepeat,thenanswersomequestions.
4:
Readandthink
Completethefollowingblanks.
1PETERWhywasthevoiceimpatient?
JUDY___________Daisywas____________________________.
2PETERWhydidDaisynodherhead?
JUDY____________sheknew___________________was.
3PETERWhydidthewatergotoatreatmentworks?
JUDY____________it____________________journey.
4PETERWhydidthewatersay,‘I’llbebackintheseaagain.’?
JUDY____________it__________thesea_______________place.
5PETERWhydidthewatersayitwaslikeliquidgold?
JUDY___________itbelievedthat_______________.
6PETERWhydidBennythinkhissisterwasweird?
JUDY_________shesaid,‘______________________________.’
4:
ExplainthelanguagePoints:
1lookaround:
向四周看
Ilookedaroundandfoundtherewasnooneinthestreetatall.
2Itis/wastimetodosth.是该…的时候了,到…时候了
Itistimetohavelunch.该吃饭了。
Itwastimeforhimtostophisrevenge.
Itistimetohavearelaxifthereisnoworktodo.
3finishdoingsth.
finishwithsth.完成某事
CouldIborrowthebookwhenyouhavefinishedreadingit?
Ihavefinishedwithallmyhomework.
Theworkhasnotbeenfinishedyet.Another3daysareneededtofinishit.
Afterfinishingplayingfootball,youcanhaveabath.
4Itis（not）+adj.+forsb.todosth.某人做某事（不）容易
Itisexcitingforustogotothemovies.
Itisnoteasyforhimtowinthefirstprize.
Itisimpossibleforpeopletoliveonthesun.
5getcleanedup=becleanedup
Homework:
Thethirdperiod
TeachingAims:
1Reviewthenewwordsandexpressionsandthegrammaticalpoints
inthechapter
2DosomeExercises
TeachingImportantPoints:
Masterhowtotalkaboutamounts.
TeachingDifficultPoints:
1Thedifferentusageofafew,alittle,fewandlittle
2Howtounderstandthelisteningandthesequencesofevents.
TeachingProcedures:
1:
Revision
1Showthenewwordsofchapter6on.Firstaskastudenttoread
aloud,correctthewrongpronunciation,andthenaskthewhole
classtoreadtogether.
2Readthetextafterthetapetounderstanditbetter
2:
AskstudenttodothevocabularyexercisesC1,C2andC3.
3:
Listening
Putthepictureintorightorder.
1Oneday,Suzy’smothergaveherone-yuancoin.Itwasratherdirty,soSuzyputitinthesinkandwashedit.Whenthecoinwasniceandclean,itsuddenlystartedtalkingtoSuzy.
2Thislisteningisaimedattrainingstudents’understandingoftheorderoftheevents.Askthestudentstoseehowthedroptravelsin‘Watertalk’.
3Playtherecordingonce,whilestudentslistenbutdonot
Writeanything.Tellthemtolistenforthesenseandthemain
points.Thenreplaytherecordingandstudentsmustcomplete
theexercise.Replayitathirdtime，explaininganyproblems.
4:
Gramma:
Learnhowtotalkaboutamounts
1Hetookafewbiscuits.
Hetookalittlebutter.
*Comparethetwosentencesandaskthestudentstodiscussinpairstotellthedifferences.
*Explainthat“alittle”and“afew”allmean数量很少的,“afew”用于修饰可数名词,“alittle”修饰不可数名词，它们都表示肯定的含义
*afew=some,severalalittle=some
eg.Iwantalittlecoffee.
Givemeafewapples.
2Hetookfewbiscuits.
Hetooklittlebutter.
*Comparethetwosentencesandaskthestudentstodiscussinpairstotellthedifferences.
*Explainthat“few”and“little”allmean数量少到几乎没有,“few”修饰可数名词,“little”修饰不可数名词。
都含有否定涵义。
*few=notmanylittle=notmuch
eg.Littleofhistimeisspentonbooks.他很少花时间在书本上。
Therearefeweggsinthefridge,arethey?
冰箱里几乎没有鸡蛋，是吗？
3“few”,“afew”,“little”and“alittle”既可做形容词又可做代词。
eg.–-Doyouwantanycoffee?
--Alittle,please.
quiteafew=many
eg.IhavecollectedquiteafewstampsabouttheOlympics.（=manystamps）
4“alittle”and“little”canbeusedasadv.
eg.Hetalkedlittleabouthisfather.他很少谈论他的父亲。
Itrainedalittleduringthenight.夜里下了点雨。
Timei
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