新世纪英语教案第1册Unit ThreeWord下载.docx
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GrammarTips:
pronouns
讲练，板书，师生互动
ReadingSkills:
Usingwordpartstofindoutthemeaningsofwords（twopassages）PracticalReading:
Usingwordpartstofindoutthemeaningsofwords
5
PracticalWriting:
Thelayoutofbusinessletters
6
StudyGuide
讲练，师生互动
7
ListeningandSpeaking:
It’sveryniceofyou
教学重点（keypoints）：
KeyPoints
Vocabulary
Absorb,atmosphere,cause,community,contain,description,destruction,economic,establish,extraordinarily,basin,giant,greenhouse,growth,harvest,impression,process,profit,renewable,resource,solution,comedown,dieout,washaway,worststill,wayout,nomorethan
Structure
形式主语和主语从句
ReadingSkills
Howtousewordpartstofindoutthemeaningsofwords
Grammar
Word-building
ListeningSkills
Usecorrectwaytoexpressthanks
教学难点（teachingdifficulties）：
1.常用句型的讲解：
nomorethan,it+takes+sb.+time+todosth...
2.词组的应用：
takein,belikelyto,nolonger,etc.
3.听力训练：
听力训练中的纠错。
教学方法（teachingmethod）：
讲授法：
通过教师分析讲解使学生掌握重点难点。
阅读指导法：
给出阅读提纲，要求学生作好阅读笔记；
实验法：
主要应用于听力训练和课堂讨论；
练习法：
指导学生正确完成练习。
教学手段（teachinginstrument）：
课堂教学和多媒体教学相结合，使用听音设备进行听力训练。
教学过程（teachingprocedures）：
（含板书设计）
LeadInActivity;
StudyoftheText;
StudyofWordsandPhrases;
StudyofReadingSkills;
StudyofPracticalReading;
StudyofPracticalWriting;
StudyofPracticalListening
Thefirstperiod:
1.
Leadin
Directions:
（1）
Asksomequestionsforthestudentstoanswerfreely:
forexample:
（2）
Doyouknowaboutrainforest（雨林）?
Haveyoueverbeenexposedtoarainforest?
（3）
AsksomestudentstogivetheiropinionsonRainforests（theyareoneofthemostvaluablenaturalgiftsintheworld,butnowtheyarebeingdestroyedanddyingout）.
（4）Askthestudentstoconsiderallsidesoftheissuewhatistheiropinionabouttheissue?
Givechoices.
A.Goonclearingthemawayforlimitedwoodandland.
B.Protectingthemforlimitedpleasureandbenefits.
BackgroundInformation
Theteacherintroducesthebackgroundinformationofthetext
1.Explainwhataretherainforests?
Arainforestisapieceoftropical（热带的）woodland,characterized（表现...的特色）bylush（繁荣的）vegetation（植被）andgreatbiologicaldiversity（差异）.Therearemorespecies（种类）ofplantsandanimalsintropicalrainforeststhaninalltherestoftheworld’secosystems（生态系统）combined（组合）.About70percentofallplantspeciesintheseforestsaretrees.
2.StudytheNewwordsandexpressions（用举例、派生、比较、解释、词性变化等方法讲解）
1）Listentothetaperecordingoraskthestudentstoreadthenewwords,
2）correctthepronunciation,askthestudentstoreadaftertheteacher.
3）Explainsomeusageofwordsandphrasesandthemethodsoflearningnewwordssuchaswordbuilding.
Thesecondandthirdperiods:
1.Studythetextindetail:
1）
listentothetaperecordingoraskstudentstoreadthetext
2）
Explainthetextparagraphbyparagraph.
3）
LanguagePointsofthetext
Paragraph1
ChristopherColumbussaidthathehadneverseenanythingsobeautiful,trees“beautifulandgreen,differentfromours,withflowersandfruitsandlittlebirdswhichsingverysweetly.”
Reference:
WhoisChristopherColumbus?
ChristopherColumbuswasagreatItalian–Spanishnavigator,andhehadsailedwestacrosstheAtlanticOceantosearchforaroadtoAsia,butfoundAmericainstead.
Paragraph2
Thegreatnavigator’simpressionisthefirstknownwrittendescriptionofarainforest（最早的文字描述）.Itremainshardtobeat.Rainforestsareextraordinarilybeautiful（异常美丽）,butthebeautyisfragile.
Whatisrainforest?
4）
Arainforestisapieceoftropicalwoodlandwheretherearemorespeciesofplantsandanimalsthaninalltherestoftheworld’ecosystemscombined.
5）
在地球赤道的南北两边，有几片终年湿润的土地，那里气候炎热潮湿，雨水充沛，为植物的生长提供了非常优越的环境条件。
在这些地区，茂密的森林终年常绿，宛如环绕地球的一条翡翠项链，这就是热带雨林。
热带雨林作为我们地球生物圈中的主要角色，它不仅养育着数量庞大的动物种群，其本身在生长过程中还向大气中源源不断地供给着生命赖以生存的氧气。
因此，热带雨林有了一个别称----“地球之肺”。
近几十年，由于人们的破坏性砍伐，热带雨林的面积正在锐减，由此所造成的环境问题也越来越突出。
6）
2.Wherearerainforests?
热带雨林主要分布在中、南美洲亚马逊河流域、非洲刚果盆地、东南亚等地区。
中国云南、台湾、海南及澳大利亚局部地区也有分布。
Paragraph3
7）
Forty-fivemillionyearsagorainforestscoveredthecityofLondon,andrainforestswerethenover30millionyearsold.Thatmakesthemtheoldestcommunitiesoflivingthings（最古老的群居生物）ontheplanet.
Paragraph4
8）
Todaytheworld’s
rainforestscover
nomorethansevenpercentofitssurfaceeventhoughtheystillcontain（hold）morethan50percentoftheearth’slivingspecies（生物物种）.
Thegreatestandmostfamousofallremaining（现存的）rainforestsisfoundinBrazil,whoseAmazonBasin,withitsthousandsofsmallandlargestreams,isalmosttotallycoveredbytrees.
Therestoftheworld’srainforestscanonlybefoundinWestAfrica,South–EastAsia,andthePacificislands.
Paragraph5
Whentherainforestsarecleared,theytakealongtimetocomeback.Afewrapidlygrowingspeciesquicklybecomeestablished,butthissecondarygrowth（次生林）,asitiscalled,isfarlessrichandvaried（very:
changevaried:
ofdifferent）.
E.g.Secondaryliterature
secondaryinfection
1.Theweatherinthiscityvariesfromdaytoday.
2.Variedopinionswereexpressedaboutthenewregulation.
Sentencestructures
sb.takessometimetodosth.
Ittakessb.sometimetodosth.
某人花…时间做了某事
Examples:
Theytook10monthstotravelallovertheworld.
Ittookthem10monthstotravelallovertheworld.
Paragraph6
Whoisreallytoblame?
Itisthemodernworldthathasspeededuptheprocessofdestruction.Once,ittookateamofpeopleawholedaytocutdownagianttree.Nowasinglemancandoitintenminutes.Since1945halfoftheworld’srainforestshavecomedown（败落）.
1.Itis…
that
…
Itis…who
…
强调句型
Examples:
ItisthebookthatIamlookingfor.
ItisinBeijingthattheyfoundthemissingchild.
ItisyesterdaythatImetoneofmyoldschoolmates.
ItisbecausesheisabsentfromtheschoolthismorningthatmadeProfessorLeeveryangry.
ItisMarywhohasgonetoEnglandforherpersonalgrowth.
2.destruction–destruct,destroy
Paragraph7
Itispeoplethemselveswhoarethebiggestcause（reason）ofdestruction.Thewealthyownthebestland,andthepooroftheworldareforcedtofindlandwheretheycanfindit-anditisthere,underthetrees.Sothetreesareremoved（cutdown）.
Paragraph8
Whentreesdisappearfromtheland,thewatersourcessuddenlydisappear.Thelanditselfwashesaway,eitherbecomingverypoororcompletedesert.Worsestill,theclimateislikelytochangeas（because）thetreesarenolongertheretoabsorbthecarbondioxideintheatmosphere.Thegasrisesandtraps（挡住）thesun’sheatinmuchthe
samewayastheglassofgreenhouse,leadingtoaslowbutsteadybuild-up（usedhereasacompoundnoun:
aslowincrease上升，增强）oftemperature.
E.g.
Therapidbuild-upofpassengerserviceswonthepraiseofthepeople.
Paragraph9
Whatisthewayout,then?
Boththeproblemandthesolutionseemtobeeconomic.Governmentstillneedmoneytopaytheirdebts,settlersstillneedmoneytofeedtheirfamilies,andcompaniesstillneedtomakeprofits.
Ontheotherhand,bypurchasingrenewablerainforestproducts,anddemandingsustainableharvestingofrainforestresources,weallcanbepartofthesolutionanditishumanbeingsthatwillbesaved（另一方面，如果我们购买可再生的雨林产品，坚持使用可再生的雨林资源，我们就已经解决了部分问题，而人类本身也得到了拯救。
）
Thefourthperiod:
Reviewthetextbyreadingandasksomequestionsaccordingtothetextsothattheteachercanknowwhetherthestudentsunderstandthetextcompletely.
1.ComprehensiveQuestions
.Questionsaboutthetext:
（师生互动）
*Whyisthebeautyofrainforestsfragile?
*Whatwouldhappeniftherainforestsshoulddisappear?
*Whyarepeoplecutdowntheforests?
*Istourismoneofthepossiblewaystosavetherainforests?
Why?
*Whyarepeoplecuttingdowntherainforest?
2.SummaryoftheText
Theteacherconcludesthetext
Oncethemostbeautifulandoldestcommunitiesoflivingthingsontheearth,rainforestsarenowbeingdestroyed.Thefirstcauseofthedestructionhasbeenmen’scrazinessforland,whilethemoderntechnologyavailabletopeoplehasspedupthehorribleprocessofsuchdestruction.Worsestill,theshrinkageofrainforestshasdisastrouslyledtotheshortageofwatersourceandthewarming-upofglobaltemperature.Nevertheless,thereisstillhopeforasolutiontothisproblemifhumanbeingswilltakesomepreventivemeasures.
2.Focuson:
vocabulary
3.Homework
Assignthestudentstodoalltheexercises.
Thefifthandsixthperiod:
Exercises:
Askthestudentstodotheexercisesinclass.Theteacherwillcorrectthemistakesandexplaintheimportantanddifficultpoints.
Focuson:
2.
workout:
A:
Readthetextandthencompletestatements.
B:
FillintheblankswithwordsandphrasesfromtheVocabularySnapshot.
C:
Completethesentenceswiththeproperformsofthewordsgiveninblanks.
D:
Rearrangeth
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