Word九年級(jí)英語(yǔ)教案-仁愛(ài)版九年級(jí)英語(yǔ)上冊(cè)Unit4AmazingScience（Topic2Whenwasitinvented?SectionB）教案

Themainactivitiesare1aand3a.本課重點(diǎn)活動(dòng)是1a和3a。

Ⅰ.Teachingaimsanddemands教學(xué)目標(biāo)

1.Learnsomenewwords:

clone,experiment

2.Goonlearningthesimplepastpassivevoice:

(1)Doyouknowwhenitwasinvented?

(2)Itwasinventedin1879.

3.Learnsomeinformationabouttheclonetechnology.

(1)Cloningisfamousthroughouttheworld.

(2)ThereisDNAinmostlivingthings,includinghumanbeings.

(3)Nodoubtcloningcanhelpsavethoseanimalsindanger.

(4)Anditcanalsobenefithumanbeings.

Ⅱ.Teachingaids教具

錄音機(jī)/多媒體課件/圖片

Ⅲ.Five-fingerTeachingPlan

Step1Review

做游戲，復(fù)習(xí)一般過(guò)去時(shí)被動(dòng)語(yǔ)態(tài)的用法，導(dǎo)入新課。

1.(用上節(jié)課的作業(yè)做一個(gè)鏈?zhǔn)接螒?，以小組為單位，就計(jì)算機(jī)、MP3、CD、手機(jī)、數(shù)碼相機(jī)或?qū)W習(xí)用具等進(jìn)行對(duì)話(huà)，操練bemadeof/bemadein/bemadefrom/beusedfor的用法。讓每一小組的第一個(gè)同學(xué)回過(guò)頭去問(wèn)下一位同學(xué)，依次接著往下問(wèn)。)

T:Boysandgirls.Let’splayagame.Askquestionsonebyone.

S1:What’syourfavoriteinvention?

S2:AnMP3.What’sitmadeof?

S3:It’smadeofsteelandplastic.Whenwasitdeveloped?

S4:Itwasdevelopedaround1998.What’situsedfor?

S5:It’susedforhelpingustoimproveourEnglish.

…

2.(用多媒體出示圖片，導(dǎo)入新課。)

T:Youdidverywell.Therearemanyimportanttechnologiesandinventionsintheworldtoday.Lookatthisinvention.(展示燈泡圖片。)It’sabulb.Doyouknowaboutit?

(板書(shū)并要求學(xué)生了解。)

bulb

Ss:Yes,alittle.

T:OK,whoinventedit?

Ss:ThomasEdison.

T:Whenwasthelightbulbinvented?Doyouknow?

Ss:No.

T:OK,let’scometo1aandlearnaboutit.

Step2Presentation

通過(guò)談?wù)摳鞣N發(fā)明及其發(fā)明者和發(fā)明的時(shí)間，呈現(xiàn)1a和3a的內(nèi)容，繼續(xù)學(xué)習(xí)一般過(guò)去時(shí)的被動(dòng)語(yǔ)態(tài)及生詞。

1.(讓學(xué)生聽(tīng)1a錄音并根據(jù)聽(tīng)力內(nèi)容判斷正誤。)

T:Inthislesson,wewilllearnsomethingaboutotherinventionsandtechnologies,pleaselistento1aandmarkTrue(T)orFalse(F).

(1)Thelightbulbwasinventedin1879.()

(2)TheradiowasinventedbyThomasEdisonin1895.()

(3)TheairplanewasinventedbyWilburandOrvilleWrightin1903.()

(聽(tīng)后核對(duì)答案：(1)T(2)F(3)T。)

2.(用圖片繼續(xù)談?wù)撋鲜霭l(fā)明，引入3a。)

T:Nowlet’sgoontalkingabouttheinventions.Lookatthepicture!(出示收音機(jī)的圖片。)Whoinventedit?

T:ItwasinventedbyGuglielmoMarconi.

(呈現(xiàn)收音機(jī)的發(fā)明年份和發(fā)明者的名字。)

T:Andwhenwasitinvented?

Ss:Itwasinventedin1895.

T:Verygood.Andlookatthispicture.(展示一幅飛機(jī)的圖片。)Whoinventedit?(同時(shí)呈現(xiàn)飛機(jī)發(fā)明年份和發(fā)明者的名字。)

Ss:ItwasinventedbyWilburandOrvilleWright.

T:Andwhenwasitinvented?

Ss:Itwasinventedin1903.

T:Wehavetalkedaboutsomanyinventions.Nowwearegoingtolearnsomethingnewaboutagreattechnology.(拿出圖片。)Nowlookatthispicture.Whatanimalisit?

Ss:It’sasheep.

T:Yes,itisasheep,anditisaclonedsheep.Haveyoueverheardofclone?

(教師釋義并領(lǐng)讀clone，要求學(xué)生掌握。)

clone

Ss:Yes,ofcourse.

T:That’sverygood.Cloningisafamousexperimentthroughouttheworld.Sofar,scientistshaveclonedmanyanimalstosavethoseanimalsindanger.Thecloningtechnologyhasbeenusedinhumanorgans.Itcanbenefithumanbeings.

(板書(shū)并讓學(xué)生掌握生詞experiment；了解benefit和organ。)

experiment,organ,benefit

T:Thenwhat’sthenameofthefirstclonedsheep?

Ss:Dolly.

T:Yes,nowlet’sread3aandanswerthefollowingquestions.

3.(指導(dǎo)學(xué)生閱讀3a，回答下列問(wèn)題并核對(duì)答案，為完成3b作鋪墊。同時(shí)畫(huà)出文中的關(guān)鍵詞及短語(yǔ)，為下一環(huán)節(jié)的課文復(fù)述作準(zhǔn)備。)

(板書(shū)下列問(wèn)題。)

(1)Whenandwherewastheclonedsheepcreated?

(2)Whatotherthingshasmancloned?

(3)What’susedincloning?

(4)Whatareadvantagesanddisadvantagesofcloning?

(板書(shū)關(guān)鍵詞及短語(yǔ)。要求學(xué)生理解AIDS。)

Dolly,becreated,famousthroughouttheworld,DNA,ineverypartofyourbody,besimilarto,save,benefithumanbeings,exploremorewaysto,heartdisease,AIDSandcancer,however

4.(讓學(xué)生聽(tīng)3a并跟讀，畫(huà)出重點(diǎn)詞組，教師板書(shū)。)

T:Pleaselistento3aandreadafterit.Findouttheimportantphrases.

(板書(shū)，要求學(xué)生掌握。)

sofar,besimilarto,thesameas,nodoubt

(學(xué)生聽(tīng)完錄音后，與教師板書(shū)的內(nèi)容對(duì)照，并朗讀3a課文，教師講解本課重要詞組。)

Step3Consolidation

通過(guò)角色表演、復(fù)述等形式鞏固1a和3a內(nèi)容及一般過(guò)去時(shí)的被動(dòng)語(yǔ)態(tài)。

1.(兩人一組分角色表演1a。)

T:Pleaseactout1ainroles.

2.(再讀1a，完成1b。)

3.(讓學(xué)生再讀3a并