高二英语教案高二英语unit 4教案.docx

高二英语教案高二英语unit 4教案.docx

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高二英语教案高二英语unit4教案

Unit4GreenWorld

一、知识部分

1、重点单词

procedurebunchmerelyclassifypromoteappetiteappointcalculateexpenseinvolvesettlementaccumulateabandontonerewardtechniciannowherealtogetherlatterdistinguishedappearance

2、重点短语

lookoutfor,onalargescale,yearafteryear,passaway,nameafter,indetail,abunchof,besuitableto,have…incommon,belongto,abranchof,classify…into,base…on…,accordingto,haveanappetitefor,appoint…as…,leadacosylife,beinvolvedin,atone’sownexpesse,givebirthto

3、重要句型

强调句型

4、交际用法

speakaboutprocedures

Idividethestageintothreeparts…

Firstly,…

Itisveryimportantinthemiddlepart…

Thelastpartis….

Thisisthewholecase.

5、语法

宾语

Igaveanappletotheoldmanyesterday.

Iappreciatewalkingalongthestreetwithmysweetheart.

6、能力部分（writingapocedure）

二、教学过程

periodI

Step1

Warmingup

Lookatthepicturesandmatcheachflowerwithitscorrectname.

2.Canyoutellsomethingabouteachflower?

Wheredoesitcomefrom?

3.Whatisitusedfor?

4.Whichflowerisyourfavourite?

Explainwhy.

5.Whatvocabularywillyouneedtotalkaboutflowersandplants?

Step2

Listening（略）

Step3

Speaking

speakaboutprocedures

Idividethestageintothreeparts…

Firstly,…

Itisveryimportantinthemiddlepart…

Thelastpartis….

Thisisthewholecase.

Step4

Homework

PeriodIIandPeriodIII

Reading:

Warmingup

Lookatthepicturesandmatcheachflowerwithitscorrectname

Whichflowerisyourfavorite?

Explainwhy.

Pre-reading

WhywasCarlLinnaeusimportanttothehistoryofbotanyasascience?

Hissystemofgroupingplantsinfamilieswasunique,whichbasedonthearrangementofthemaleandfemaleorgansintheflowers.

While-reading

Fastreading

Howmanypeoplearementionedinthepassage?

CarlLinnaeusDanielSolanderJosephBanksCaptainCook

Carefulreading

1.BeforeLinnaeusbotanywas________．D

A．studiedbydoctorsB．unknowntoanyoneC．fullydevelopedD．abranchofmedicine

2.Someeconomicspeciesplantssuchas____couldhelptodeveloplocaleconomies．C

A．roseandpeonyB．teaandappleC．cocoaandhempD．Cocoaandlemon

3.Itwas____whomadeKewacentreofscientificandeconomicresearch．A

A．JosephBanksB．CaptainCookC．LinnaeusD．DanielSolander

4.Paragraphoneofthetextmainlytellsus___．C

A．theimportanceofbotanyB．howtoclassifyplantspeciesintogroups

C．Linnaeus’contributiontobotanyD．Linnaeus’discoveriesaboutdifferentspecies

5.CaptainCookmade___voyagesaltogetheraroundtheworld.C

A．oneB．TwoC．ThreeD.four

Post-reading

1.HowdidscientistsclassifyplantsbeforeLinnaeus?

Somescientistsclassifiedplantsintoherbsandtrees,oraccordingtotheshapeofthefruit,orwhethertheyhadflowersornot.

2.WhatwerethegoalsofJamesCook’sfirstvoyagearoundtheworld?

TostudythepassingoftheplanetVenusacrossthesun;torecord,classifyanddescribeallplantandanimallifeobservedduringthetrip;tosearchforanunknownsoutherncontinent.

3.WhydidJosephBankshavetosupplyhisownmoneytoequippartoftheexpedition?

Becausethegovernmentwouldnotpayforsuchanewfieldofscienceasbotany.

4.Whatcouldbeapossibleexplanationforthename“strawberry”?

Whenpeopleplantstrawberry,theyspreadstrawunderthefruittoreducethenecessaryamountofwatering.

TranslatethefollowingphrasesintoEnglish:

1.详细地indetail

2.处于支配的地位，负责inchargeof

3.由……负责inthechargeof

4.任命某人为……appointsb.as

5.将……分类成classify…into…

6.计算……之间的距离calculatethedistancebetween…

7.一代一代传下去passonfromonegenerationtothenext

8.建于……之上；以……为基础bebasedon

9.参与;陷入……的活动beinvolvedin

10.根据;视……而定；按照accordingto

11.搜索；寻找searchfor

12.总而言之altogether

1.match…with（在品质；颜色；设计等方面）相等，相当，相配

2.attheageof在……岁时

3.lookoutfor警惕;留心;守侯

4.onalargescale大规模地;大范围地

5.yearafteryear年年;年复一年

6.passaway逝世

7.name…after给……取名;命名

8.indetail详细

9.takecareof关心;照顾

10.classify…into分类;归类

11.developalifelongfriendshipwith与……结存了终生好朋友

12.borninto出生

13.haveanappetiteforknowledge有求知欲

14.appointsb.as…委派;任命某人为……

15.spreadover传播;流传

16.agreatdealof大量;许多（用于不可数名词）

17.liein在于

18.relatedto与……有关

19.thekeyto关键是（在于）

20.adaptto适应于

21.besunkeninto堕入

PeriodIV

Intergratingskills

TeachingAims：

1.Getthestudentstograspthemainideaofthetextsoastoimprovetheirreadingability．

2.Getthestudentstolearnthescientificwayforthescientiststodotheirresearchwork．一thewaytothinkandobserve．

3.Getthestudentstowriteadescriptionofplants．

TeachingImportantPoints：

1.Howtoanalysefinarticlesoastograspitsmainidea．

2.Howtowriteadescriptionaccordingtotheinformationgiven．

TeachingDifficultPoint：

1.Howtoimprovethestudents’readingability---howtoanalyseanarticle.

TeachingMethods：

1．Pairworkorgroupworktomakeeverystudenttakeanactivepartintheclass．

2．Discussiontogetthestudentstounderstandwhattheyare1earningbetter．

TeachingAids：

1．acomputer

2．acourseware

3．ataperecorder

Teachingprocedures:

StepI GreetingsandRevision

   Greetthewholeclassasusual．

T：

Inthelastperiod。

youweretoldtomakesentenceswiththeusefulwordsandexpressionsinthetext．Haveyougotprepared?

（Ss：

Yes．）Nowreadthesentencestous．Volunteer!

Onestudent，onesentence．

Sa：

makeattempttodosth．

  Theymadenoattempttoescape．（atescaping）

Sb：

classify

   Thebooksinourschoollibraryareclassifiedaccordingtosubject．

Sc：

group

  Grouptogetherintwo!

Sd：

identification

   Hecarriesidentificationwithhimatalltimeswhenheisout．

Se：

promote

   Heworkstopromotethefriendshipbetweenthetwocountries．

Sf：

privilege

   Theyfightagainstprivilegeinordertocreateafairersociety．

Sg：

cosy

   Helivesinanicecosylittlehouse．

Sh：

haveanappetitefor

   Theenemyhadnoappetiteforthefight．

Si：

appoint

    Hewasappointedministertoaforeigncountry.

Sj：

calculate

   Thescientistscaculatedwhenthespaceshipwouldreachthemoonwithacalculator．

Sk：

onalargescale

   Theworkofreformingindustrycarriedoutinallprovincesonalargescale．

Sl：

involve

   Thecaseinvolvedseveralleaders．

Sm：

accumulate

   Heaccumulatedafortunebyinvestingwisely．

Sn：

abandon

   Hefoundababyabandonedbyhisparents.

StepIIPreparationforReading

 T：

Somuchforhomework．NowopenyourbooksandturntoPage169．Let’sreadthenewwordsandexpressionsofthisperiod．Whowillreadthemtous?

 Sl：

I’lltry…．

   （Teacheraskssomestudentstoreadthenewwordsandexpressions．Whilereading，letotherstudentscorrectthemistakesmadebythestudents．Thenplaythetapetogetthestudentstofol1ow．Teachermaygivebriefexplanation

   abouttheirusageswhennecessary．）

StepⅢFast-reading

 T：

You’velearntsomethingaboutCarlLinnaeus。

DanielSolanderandJosephBanksinthetextwe’vejuststudied．Andyou’vereadaboutMichurinandDarwin．Today，we’lllearnaboutanothertwoscientistsGregorMendelandGoteTuresson．Whatdidtheydo?

What contributiondidtheymake?

Afterwe’velearntthepassage．I’IIsureyou’11haveaclearidea．

   （Showthefollowingonthescreen．）

   Nowreadthetextfastandtrytograspthemainideaofthetextasmuchaspossible.Thenfindanswerstothequestionsonthesceen.

 Answerthefollowingquestions:

 1．WhatwasCharlesDarwin’shobbywhenhewasyoung?

 2．WhatledDarwintowritehisfamaousbook“OntheOriginofSpecies”?

 3．Whofoundedthescienceofgenetics?

 4．Whomadecontributiontotheimprovementoftheoutputofcropsaccordingtothetext?

 （Studentsbegintoreadthetaxt.Afterafewminutes,teachersaysthefollowing）

 T：

Haveyoufinished?

 Ss：

Yes，wehave．

 T：

Nowgiveustheanswers,please.Onestudent，onequestion．

 Sb：

1．Whenhewasyoung,Darwinenjoyeddoingallkindsofexperimentsandstudyingphysics,chemistryandlaterbotanywashishobby.

 Sc：

2．Whenhewastwenty-twoyearsold，hewasinvitedtotakepartinthescientificexpeditiononthefive-yearvoyageledhimtowritehisfamousbook：

OntheOriginofSpecies

 Sd：

ItwastheresearchworkofMendelthatgavebirthtothescienceofgenetics.

 Se：

Mendel’sgeneticsandTuresson’sfindingsarebothimportanttotheoutputofcrops．

 T：

Whatyousaidisright.Thankyouforgivingussuchgooda

StepⅣReadingandComprehension:

T：

（Showthefollowingonthescreen）

Nowlet’sreadthetextagainanddiscussthequestionsonthescreen.Pairworkorgroupwork．

1．TheresearchofCharlesDarwin,GregorMendelandCoteTuressonislikepiecesinapuzzlethatshowacompletepicturewhenputtogether.

（1）WhatdidDarwindiscoveraboutbirdspeciesinGalapagos?

（2）WhatdidMendelobserveinhisexperimentswithpeas?

（3）LookingatwildplantspeciesinSweden，whatdidTuressondiscover?

2．Completethefollowingsentence．

 Darwin’sdiscoveriesinGalapagoswerebasedondifferences______wildspecies，whileTuresson’sobservationsshowedthattherearestablevarieties___wildspecies．

3．Thatsoilconditionsareimportanttotheoutputofcropswasknownmorethan2000 years ago．WhyareTuresson’sdiscoveriesstillimportanttoagriculturethen?

 （Teachergoesamongthestudentsandjoinsthestudentsintheirdiscussion．）

T：

（Aftersomeminutes’discussion．）Nowgiveusyouranswers，please.Whowillanswerthefirstquestion?

Sf：

Hefound13kindsoffindes，relatedtoeachotherinthestructureoftheirbeaks，tails，shapeofbodyandcolouroftheirfeathers．Themostcuriousfactwasthedifferencesinthesizeofthebeaks．Thiscouldonlybeexplainedfromthedifferencesinhabitatandsource