Scientists at work.docx

Scientists at work.docx

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Scientistsatwork

Unit16Scientistsatwork

Teachinggoals

1.Talkaboutscienceandscientists

2.Practisegivinginstructions.

3.Discussandevaluateprosandcons.

4.Studysomerulesofwordformation.

5.Learntowriteamargumentativeessay

Period1

Step1.Learnthewordsinthisunit.

Step2.Warmingup

1.Whenyouaretalkingaboutstudy,almostallofyouthinkthatstudyingcanonlyhappenintheclassroom,anditonlymeanslisteningtotheteachers’explanation.Buttherecanbemanymeanstostudy.Forexample,studyinginthelab,readingbooksbyyourselvesandsoon.

2.Lookatthefourpicturesinthebookanddescribewhatyoucanseeineachpicture.

3.Whatarethenamesoftheschoolsubjectsinwhichyoustudyscience?

（physics;chemistryandbiology）

4.Examplesofwhatyoulearnineachfieldofscience.（onthescreen）

5.Whenyoudoexperimentinthephysicslaborinthechemistrylabsorinthebiologylabs,arethereanyrulesforyoutoobey?

Ofcoursetherearealot.Whataretheserules?

Trytomakealistofthesesrules.

6.Askindividualstudenttospeakouttheirrules.

Step3.Listening

1.Firstlookattheexercisesinthebookandmakeaguess.Whatwearegoingtohear.Therulesinthelab.Thatis,whatthestudentsshoulddoandwhattheyshouldnotdo.

2.TacktheanswersthatMrsZhutalksabout.

3.ListenonceagainandanswerthequestionsinEx2.

4.Checktheiranswerstogetherfirstindividuallyandthenonthescreen.

Step4.Videoshow

1.Letthestudentswatchavideoaboutwhatshouldbedoneandwhatshouldnot

Step5Homework

1.Collectsomeinformationabouttherulesinyourphysicslaborinyourchemistrylaboryourbiologylab.Andwritedowntherulesinyourexercisesbooks.

2.PrepareTALKINGonpage89.

Period2

Step1Revision

1.Thenewwordinthisunit

2.Listentothestudents’rulesforthephysics,chemistryorbiologylabs.

Step2talking

1.Lookatthepicturesonthescreenandtalkaboutthedosanddon’tsinalab.

2.Talkingexercise.Givepropersafetyinstructionsaccordingtothevarioussituationsinthebook.

Step3Speaking

1.ThedialogueisaboutthedifferentopinionsofthehighspeedmaglevtraininShanghai.Whatisamaglevtrainlike?

Lookatsomepicturesonthescreen.

2.Listentothetapeaboutthedialogue.Andlearntotalkaboutadvantagesanddisadvantagesofahigh-tech.

3.Howtotalkaboutadvantagesanddisadvantages?

Lookattheusefulexpressionsinthebook..Studentsreadthesentencestogther.

4.Discussingroupsabouttheadvantagesanddisadvantagesabout“cloning;nuclearenergy;computersandspaceflights”.

5.Listentothestudents.

Step4Homework

1.Oralhomework:

Prepareadialogueaboutadvantagesanddisadvantageofahigh-tech,makingadebateorargument.

2.Previewthetext.

3.FindoutsomeinformationaboutBenjaminFranklinandsaysomethingabouthiminthenextclass.

Period3

Step1Revision

1.Listentothestudents’debatesaboutacertainkindofhigh-tech,suchascloning,nuclearenergy;computer,orspaceflight.

2.Checkthestudents’memoryabouttheusefulexpressionsinthebook.

Step2.ACompetition

1.Checkthestudents’commonsenseaboutsomefamousscientistsandwhatinventionsdidtheymake.

2.TalkaboutBenjaminFranklin

Step3Reading

1.Fastreadingandlistening:

letthestudentstoreadandlistentothetapetodecidetrueorfalsestatementsaboutthetext.（onthescreen）

2.Skimming:

letthestudentreadthetextagainandfindoutsomedetailsaboutthetext.（onthescreen.）

3.Readthetextforathirdtimeandchoosethebestchoices.（onthescreen）.

4.theanalyzesofthewholepassage

Threeparts

Para1—3:

thedescriptionoftheexperiment

When:

onarainydayinJune,1752

Where:

inashedinthefields

Who:

Franklinandhisson

What”:

akiteexperiment

Why:

toprovelightningandelectricityarethesame

Para4:

theneededmaterials

Asilkhandkerchief:

Piecesoflightwood:

tomakeakitetocarrythething

intothesky:

String

Akey:

tofeeltheelectricshock

Thunderstorm:

toproducelightning

Acondenser:

tocollectandstoreelectricity

Para5—6thestepsoftheexperiment

Step1:

fixapieceofsharpmetaltothekite

Step2:

fastenakeytotheendofthestring.

Step3:

tiearibbontothestring

Step4:

flythekitewhenathunderstormappears.

5.AnswerthequestionsinpostreadingEx2.

Step4Homework

1.Readthetextandtrytoretellit.

2.Findoutthedifficultwordsandexpressionsinthetextandrefertosomereferencebooks.

Period4

Step1Revision

1.Listentothestudents’retellingthetext.

2.Dictatesomesentences:

（oneswritesontheBb）

（1）Intheeighteenthcentury,BenjaminFranklinconductedanumberofexperimentsinwhichheshowedwhatelectricityis.

（2）HavingrealizedthatIcoulduseakitetoattractlightning,Idecidedtodoanexperiment.

（3）Thestringwasgettingcharged.

（4）Mostkitesaremadeofpaper,butakitemadeofsilkwillnottearsosooninweatherwithrainandstrongwinds.

（5）Tiethecornersofthehandkerchieftothepointsofthecross,andyouwillhaveanicestrongkite.

（6）Fixaverysharppieceofmetal,pointingafootormoreabovetheframe,tothetopofthelongerstickofthecross.

（7）Flythekitewhenathunderstormappearstobecomingon.

Step2languagepoints

1.AnalyzetheabovesentencesandtranslatethemintoChinese.

2.somewords:

（1）successful----besuccessfulin（doing）sth;succeedindoingsth;

dosthsuccessfully;havesuccessindoingsth

Wereyousuccessfulinpersuadinghimtochangehismind.

Hewassuccessfulinpolitics.

Hesucceededingettingwhathewanted.

（2）conduct----

Thewaiterconductedthecustomerstothedoor.（leadorguide）

Whoconductedthisconcerttoday?

（directtheperformanceof）

Copperconductselectricitybetterthanothermaterials.（allowheatorelectricitytopass）

Thereporterwascriticizedforhisconduct.（behavior）

（3）charge-----

Ittakesfourhoursformycellphonetogetcharged.（storeelectricity）

Theycharged2000yuanforthesuit,butIcanonlypay800yuanforit.（askasaprice）

Thechildrenchargeddownthestairs.（rush）

Hewaschargedwithmurder.（accusesbofsth）

（4）prove----Giveproofof;showtobetrue

Hehasprovedhiscourageinthebattle.

Factsprovedthatwhatyousaidwascompletelywrong.

Itprovedthatheisacheat.

Heprovedhimselftobecapable.

Thereportproved（tobe）true.（被证明是）

Thedrugproveshelpful.

（5）tear

Itoremyshirtonanail.=Anailtoreaholdinmyshirt.

Shetorethewrappingoffthepresent.

Hegotsoangrythathetoretheletterintopieceswithoutfinishingreadingit.

Theyaretearingdowntheoldhousestobuildnewbuildings.

Hereyesfilledwithtears.

主动形式表示被动意思；连用副词well;easily

sell;wash;write;read;last;tear;wear

Thebooksellswell.

Silkwasheseasily.

Hispenwritessmoothly.

Jeanswear/lastlong/well.

Papertearseasily.

Hispoemsreadwell.

Thiskindofclothwearslong.

（6）control

Ihavenocontroloverhim.

Soonthefirespreadandgotoutofcontrol.

Hecontrolledhisangerandexplainitagainpatiently.

incontrol;outofcontrol;undercontrol;losecontrolof

（7）sense

Hehasakeensenseofhearing.

Shehasnosenseofhumor.

I’measytolosemywaybecauseIhavenosenseofdirection.

（8）doubt

Idoubtedmytwoeyes.

Idoubtedwhetherthestorywastrue.

Idoubtwhetherhewillappear.

Idon’tdoubtthatwewillwinthegame.

Thereisnodoubtabouthisabilityforthejob.

Itisbeyonddoubtthathewillhelpus.

3.Phrases:

（1）inone’sopinion

（2）makeuseof利用

（3）anumberof许多

（4）conduct/do//make/tryanexperiment作试验

（5）flyakite放风筝

（6）get/becomecharged充电

（7）electricshock电击

（8）agreatdealof大量的

（9）tie…to/fasten…to把…绑在…上

（10）add…to给…增加

（11）pointto指向pointat指着

（12）takeare小心

课文疑难解析

1.Thisnewtrainhasnowheelsandnoengine.这种新型火车没有轮子，也没有发动机。

（Speaking;page23）

否定句用and连接时，第二个否定词no（not/never）等不宜省略。

and也可以改为or，但此时一般用前一个否定词即可。

如：

Thereisnoairandnowater（=noairorwater）onthemoon.月球上没有空气，也没有水。

Heneversmokesandneverdrinks.（=Heneversmokersordrinks.）他从不抽烟，也不喝酒。

2.Hereishowhedescribedoneofhisexperiments.下面是他对自己的一个实验的描述。

（Reading,Paragraph1）

here常位于句首，用于引起对某物或某人的注意或用于把某物给某人，后常接倒装语序。

如：

It’steno’clockandhereisthenews.现在是十点钟，下面报道新闻。

Herecomesthebus!

公共汽车来啦！

—Ileftmycameraathome.我把相机放在家里了。

—Hereyouare!

Usemine.给你，用我的吧！

3.HavingrealizedthatIcoulduseakitetoattractlightening,Idecidetodoanexperiment.在意识到可以使用风筝捕捉闪电之后，我决定做一个试验。

（Reading;Paragraph2）

Havingrealizedthat…在这里是现在分词短语作时间状语，相当于AfterIhadrealizedthat…。

注意分词的逻辑主语应与句子的主语保持一致，即realized的主语也是I。

如：

Havingfinishedhishomework,Jackranouttoplaybasketball.做完家庭作业之后，杰克跑出去打篮球。

Havingbeengivensuchagoodchance,hewouldn’tgiveituptoothers.大家给了他这么好的一个机会，他不会把机会让给别人。

4.Iwasbeginningtothinkthattheexperimentwouldnotwork.我开始认为试验可能行不通。

（Reading;Paragraph3）

（1）beingtodo/doingsth：

开始下雨了。

ShebeganlearningEnglishfiveyearsago.她五年前开始学习英语。

（2）work:

vi.

①工作，从事

Sheworksinafactory.她在工厂工作。

Ispentthewholeweekendworkinginthegarden.我整个周末都在花园里干活。

②（计划、机器等）运作，进行顺利

Doesthislightwork?

这盏灯亮吗？

Yourideawon’tworkinpractice.你的想法在实际中行不通。

5.Thisexperimentprovesthatlightningandelectricityarethesame.这个实验证明了闪电与电是相同的。

（Reading,Paragraph3）

prove意为“证实；证明”，常用作及物动词，后接名词或that从句或复合宾语；也可用作系动词，后接形容词或动词不定式，意为“证明是；显示出是”。

如：

Inordertoproveherpoint,sheshowedthemthelatestsalesfigures.为了证明她的观点，她给她们看了最新的销售数字。

Thefingerprintsonthegunprovedthatshewasthemurderer.枪上的指纹证明她就是凶手。

Theyprovedher（tobe）guilty.他们证明她有罪。

6.Thestringwasgettingcha