九上 Unit 9 When was it invented第2课时Section A1a2c.docx
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九上 Unit 9 When was it invented第2课时Section A1a2c.docx
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九上Unit9Whenwasitinvented第2课时SectionA1a2c
Unit9Whenwasitinvented?
SectionA(1a-2c)
Learninggoals:
Talkaboutthehistoryofinventionsandtheirusesbyusingthepassivevoice.
Step1Preview
如何理解被动语态?
为取胜更清晰、更深刻地理解被动语态的含义,可以将主动语态和被动语态的句子结构进行比较。
主动语态:
主语+谓语动词+宾语+其他成分
被动语态:
主语+be+过去分词+by+宾语+其他成分
如:
ManypeoplespeakEnglish.
被动语态Englishisspokenbymanypeople.
一.专项训练
1.Thebridge_______(build)bythefarmersthemselvesin1982.
2.Allthebookswill______(send)tothechildrenwholiveinthesmallvillage.
3.Keys______usedfor______thedoors.(open)
4.Mymothertoldmethatmyhomeworkmust______(finish)ontime.
5.When______thecar______?
(invent)
答案:
1.wasbuilt2.besent3.are,opening4.befinished5.wasinvented
通过这一环节的复习,使对被动语态遗忘或掌握不好的学生又能很好地掌握和运用。
二.Translate
1.—汽车是何时发明的?
—它是在1885年发明的。
2.—电动拖鞋是何时发明的?
—它们是去年发明的。
3.—他们是谁发明的?
—它们是朱莉.汤姆森发明的。
4.—他们是用来干什么?
—它们是用来在黑暗中照明的。
答案:
1.__Whenwasthecarinvented?
__Itwasinventedin1885.
2.__Whenwaselectricslippersinvented?
__Theywereinventedlastyear.
3.__Whoweretheyinventedby?
__TheywereinventedbyJulie.Thompson.
4.__Whatweretheyusedfor?
__They’reusedforseeinginthedark.
这些是本课甚至是本单元的基本句型。
通过检测可看出学生的预习情况,利于下一步教学,同时给没预习好的同学一次学习的机会。
Step2Presentation
Lookatthethingsonpage68.Whenweretheyinvented?
Numberthemintheorderoftheirinvention.
A:
Ithinkthetelephonewasinventedbeforethecar.
B:
Well,Ithinkthetelephonewasinventedafterthecar.
TV1925JohnL.BairdScottish
A:
IthinktheTVwasinventedbeforethecomputer.
B:
Well,IthinktheTVwasinventedafterthecomputer.
Telephone1876A.G.BellAmerican
T:
Whichonearthisright?
Nowlet’slookat1b.
利于图片很直观而且能引起学生注意激发学生的兴趣。
1.Listenandfindthegeneralidea.
Whataretheytalkingabout?
A.Theyaretalkingaboutthecar.
B.Theyaretalkingaboutthecomputer.
C.TheyaretalkingabouttheTV.
D.Theyaretalkingaboutwhensomethingswereinvented.
1blisteningandmatching.
Listentotherecordingandmatchtheinventionswiththedates.Thenreadafterthetape.
Thetelephonewasinventedin1876.
Carswereinventedin1885.
TheTVwasinventedaround1927.
Thehand-heldcalculatorwasinventedin1971.
Thepersonalcomputerswereinventedin1976.
1cDoingpairwork
Inpairs,onecoversthedatesandtheotheraskshimwhenthethingsinthepicturesonpage68wereinvented.Thenchangerolesandpracticeagain
A:
Whenwasthetelephoneinvented?
B:
Ithinkitwasinventedin1876.
A:
Whenwasthecarinvented?
B:
Ithinkitwasinventedin1885.
A:
WhenwastheTVinvented?
B:
Ithinkitwasinventedaround1927.
A:
Whenwasthehand-heldcalculatorinvented?
B:
Ithinkitwasinventedin1971.Nowclass,what’resomeotherinventions?
Whomaretheyinventedby?
What’retheyusedfor?
Let’slookat2a.
Step3Listeningandmatching
Youshalllistentotherecordingandnumbertheinventionsintheorderthatyouhearthem.Listenagainandmatchtheinventionswiththeirinventorsanduses.
Roleplaytheconversationsusingtheinformationinthechartinthemiddleofpage69.Payattentiontotheformationofpassivevoice.
A:
Whataretheshoeswithadjustableheelsusedfor?
B:
Theyareusedforchangingthestyleoftheshoes.
A:
Whatarethebattery-operatedsneakersusedfor?
B:
Theyareusedforseeinginthedark.
A:
Whatistheheatedicecreamscoopusedfor?
B:
Itisusedforscoopingreallycoldicecream.
Fillintheblanks.
B:
Whatarethose?
G:
They’rebattery-_________slippers.
B:
Whataretheyusedfor?
G:
Theyareusedfor________inthedark.
B:
Oh,that’scool!
Whowerethey_________by?
G:
JulieThompson.Andlookatthisheatedicecreamscoop.
B:
Iknowwhatit’sfor!
It’susedfor________reallycoldicecream.
G:
Right.Itwasinvented____ChelseaLanmon.
B:
Myfavoritearethoseshoes____________heels.Youknow–youcanmovetheheels__________.TheywereinventedbyJayceCoziarandJamieElsworth.
G:
And______aretheyusedfor?
B:
Well,youcanchangethestyleofyourshoes.Youcanmaketheshoesgo____casual____dressy.
答案:
operated/seeing/invented/scooping/by/withadjustable/upanddown/what/from/to.
进行听力模仿,感知英语发音特点,提高口语表过水平.学生间的对话练习和据听力原文填空很好地训练了学生的口语和阅读能力。
翻译探究:
1.Whenwasitinvented?
inventv.发明,创造例如:
He_____anewwayofmakingsilk.他发明了一种制造丝绸的新方法。
Doyouknowwho_______computers?
你知道谁发明的电脑吗?
【拓展】
(1)inventorn.发明家,创造者,发明者例如:
Edisonwasagreat________.爱迪生是一个伟大的发明家。
(2)inventionn.发明(物),创造例如:
Edisonhad1,093_________.爱迪生有1,093项发明。
2.They’reusedforseeinginthedark.它们被用于在黑夜里观看。
beusedfor表示“被用来做……”,介词for表示目的和用途,后面接名词或动词-ing形式。
Woodcan___________________paper.木材可以被用来造纸。
【拓展】含有beused的常用短语:
(1)beusedas表示“被用作……”,介词as意思是“作为”的意思,其后一般接名词,强调使用的工具及手段。
Thisbookcan___________atextbook.这本书可以当作教科书来用。
(2)beusedby表示“被……使用”,by后接动作的执行者。
Thiskindofmachine___________farmersforgettingincrops.
3.Battery-operatedslipperswereinventedbyJulieThompson.电池控制的拖鞋是朱莉。
汤普森发明的。
operatev.操作,作业
【拓展】
(1)operatev.操作,作业例如:
Canyou________thecomputer?
你会用电脑吗?
(2)operatev.动手术,用于operateonsb.“给某人做手术”。
例如:
Thedoctorwill_________hismotheratonce.那位医生将马上为他的母亲动手术。
(3)operatev.经营,管理例如:
Thecompany________tenfactories.这家公司经营着10家工厂。
(4)operationn.手术例如:
Shehad__________forstomach.她做过胃部手术。
答案:
1.hasinvented/invented/inventor/inventions
2.beusedformaking/beusedas/isusedby
3.operate/operateon/operates/anoperation
Step4当堂检测题
仿照例句改写句子(16分)
Model:
What’syourdeskmadeof?
(wood)Mydeskismadeofwood.
1.What’sthedooroftheclassroommadeof?
(wood)___________________________
2.What’rethewindowsmadeof?
(glass)___________________________________
3.What’syoursweatermadeof?
(wool)____________________________________
4.What’reyoursocksmadeof?
(silk)_______________________________________
二、用所给动词的适当形式填空:
(10分)
1.Apenisusedfor_________________(cook).
2.__________________(learn)Englishwellisimportant.
3.I______________(clean)theroomjustnow.
4.Thebikewas________________(find)byTom.
5.Manyshops____________________(see)alongthestreet.
6.Thisboxis__________________(use)asadesk.
参考答案:
一,1Thedooroftheclassroomismadeofwood.2.Thewindowsaremadeofglass.3.Mysweaterismadeofwool.4.Mysocksaremadeofsilk.二,1.cooking2.learning3.cleaned4.found5.areseen6.used
通过练习巩固了本节课所学知识,同时又对学生掌握情况进行了检测。
亮点:
利于图片很直观,听练结合。
使用建议:
确保学生复习好被动语态再进行下面的内容。
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- 关 键 词:
- 九上 Unit When was it invented第2课时Section A1a2c invented 课时 Section
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