九年级英语九单元3课时.docx
《九年级英语九单元3课时.docx》由会员分享，可在线阅读，更多相关《九年级英语九单元3课时.docx（11页珍藏版）》请在冰豆网上搜索。
九年级英语九单元3课时
Unit9Whenwasitinvented?
SectionA（3a-4）阅读课
一、TeachingGoals：
Learnandusethevocabularies:
bulb,lightbulb,microwave,microwaveoven.ExpresstheirideasaboutsomeinventionsbyusingWhatdoyouthinkisthemosthelpful/annoyinginvention?
Trainthestudentstolearntoexpresstheideasaboutinventions.
二、Teachingandlearningsteps:
StepOne:
Preview:
1、Letthestudentsreadthewordsaccordingtothephoneticsymbols.（让学生学会用据音标读单词，学会自学，这样为他们的终身学习奠定基础）
【设计意图】培养学生养成预习习惯，并用简单工具书查找信息，遇到困难时有效地寻求帮助。
StepTwo:
Warmingupandleadingin热身导入
alarmclocklightbulbmicrowaveoven
1.Showsomepictures.
T:
Doyouknowtheirnames?
Isithelpfulorannoying?
Nowlet’smakealistoffivehelpfulinventionsandfiveannoyinginventions.
Helpfulinventions
Annoyinginventions
Example:
telephone
Example:
alarmclock
1.vacuumcleaner
1.air-conditioner
2.soundproofdoor
2.truck
3.computer
3.telephone
4.faxmachine
4.junkfood
5.car
5.icecream
2.T:
What’sthisinpicture?
Whataretheyusedfor?
Doyouthinkitishelpfulorannoying?
Nowlet’smakeupdialogues.
Ssmakeupdialogues.
Dialogue1:
A:
Whatisthis?
B:
Itisanalarmclock.
A:
Whatisitusedfor?
B:
Itisusedforwakingpeopleupinthemorning.
A:
Doyouthinkitisannoying?
B:
Sometimes,whenIwanttogoonsleep.
Dialogue2:
A:
Whatisthis?
B:
Itisalightbulb.
A:
Whatisitusedfor?
B:
Itisusedforgivinglight.
A:
Doyouthinkitishelpful?
B:
Yes,Ithinkso.BecauseIalwaysdohomeworkandreadbooksintheeveningbyitslight.
Dialogue3:
A:
Whatisthis?
B:
Itisamicrowaveoven.
A:
Whatisitusedfor?
B:
Itisusedforheatingcoldfoodandcookingmeals.
A:
Doyouthinkitishelpful?
B:
Yes,Ithinkso.BecausemyparentsareverybusyandIcanuseittocookmealsbymyself.
【设计意图】:
展开小组竞赛形式，鼓励学生不拘泥课件，畅所欲言。
让学生欣赏各种图片，吸引学生的兴趣，调动他们各种感官，学生能够用所给的词汇表达对发明的看法，这其实让学生在潜移默化中说出对发明的评论，同时也是巩固上节课的内容，并为下一步的对话练习做好了铺垫。
StepThree:
Pairwork3b
1.Showsomepictures.
T:
Lookattheseinventions.Whatdoyouthinkisthemosthelpful/annoyinginvention?
Whyisthat?
Nowlet’smakeupsomedialogues.
2.Makeupdialogues.
Dialogue1:
A:
Whatdoyouthinkisthemosthelpfulinvention?
B:
Ithinkthemosthelpfulinventionisthevacuumcleaner.
A:
Whyisthat?
B:
Well,itcanhelpmecleanthefloorwhenmotherasksmetodothe
cleaning.
Dialogue2:
A:
Whatdoyouthinkisthemostannoyinginvention?
B:
Ithinkthemostannoyinginventionistheair-conditioner.
A:
Whyisthat?
B:
Well,Ifeeluncomfortableintheroomwithanair-conditioner.
Dialogue3:
A:
Whatdoyouthinkarethemostannoyingorhelpfulinventions?
B:
Ithinkthetruckisthemostannoyinginventionandthesoundproofdoorandwindowarethemosthelpfulinventions.
A:
Whyisthat?
B:
Thetrucksalwaysmakenoisesandpeoplecan’tsleepwell.Iftheyhavethesoundproofdoorandwindow,peopleneedn’tworryaboutthenoisesanymore.
StepFour:
4Groupwork
T:
Whatwouldyoudoifyouarealoneonatinyisland?
Choosefiveinventionsyouwouldliketohaveontheislandwithyou.
Dialogue1:
A:
I’dliketohavesomematches,becauseIcouldlightafiretokeepwarm.
B:
Yes,butthat’snotgoingtohelpyouleavetheisland.Ithinkitwouldbebettertohaveacellphone.
Dialogue2:
A:
I’dliketohaveatelescopebecauseIcouldlookfar.
B:
Yes,butthat’snotgoingtohelpyouleavetheisland.Ithinkitwouldbebettertohaveasignallamp.
StepFive:
Inquiryintoknowledgebytranslation
1.doyouthink作插入语的用法
1）.用于疑问句中。
句式：
特殊疑问词＋doyouthink＋陈述语序
例：
WhatcanIdo？
如果中间插入doyouthink则后面必须改为______语序.
WhatdoyouthinkIcando？
2）.Whatdoyouthinkisthemostdifficultsubject?
上面的例子what是句子的主语，语序______.
2.Yes，butthat’snotgoingtohelpyouleavetheisland.
leave用法
1）.leave用作及物动词，意为“留下,留给，放下”常与表示地点的介词短语连用。
短语leavesbbyoneself意为“______________”
Theyareverybusywithworkandalwaysleavetheirsonhomebyhimself.
Ileftmyumbrellainthetrain.
2）.leave可用作及物或不及物动词，意为“离开。
出发。
”常用于短语______,__________，意为“动身，出发（去某地）”
HeleftPairsforNewYork.
3）.leave属非延续性动词，它不能和表示一段时间的词连用，如果要表示离开一段时间，要用__________来代替。
Ihavebeenawayforaweek.
3.Ithinkitwouldbebettertohave…
1）.would的用法
would在此句中表示_______，指不确定的可能性。
后接动词_____或完成时。
ThestudyofJapanesewouldtakemuchofyourtime.
Ithoughthewouldhavetoldyouallaboutit.
2）.It’sbettertodosth最好做某事
it是形式主语，___________是真正的主语。
It’sbetterforyoutowalktoschool.
【设计意图】首先让学生先独立思考，然后小组讨论，接着让学生展示自己的成果。
鼓励学生在讲台前看课件并且板书讲解。
再次鼓励后进生讲解，运用多元评价进行鼓励学生，采取小组加分的形式，或师生表扬的形式，让他们体会学习的乐趣。
StepSix:
Theendofclasstest当堂检测：
一.用“invented”或“usedfor”填空.
1.Whatarechopsticks_______?
2.Whowasthetelephone________by?
3.Whenwastea________?
4.Whataremicrowaveovens_______?
5.Whenwerepotatochips________?
二.填空.
A:
Look!
Thislookssointeresting!
B:
Ah,it’sagreatinventionofChina.
A:
Really?
When______it_________?
B:
Ithinkit_______________inHanDynasty.（汉朝）
A:
What______it______for?
B:
Guess!
A:
______it______forholdingwater?
B:
No.It___________fortestingearthquakes.
A:
Wow,it’sreallyamazing!
三．单选。
1.（2008，黄冈）—wasinventedbyChinesecenturiesago.
A.ThetelephoneB.Thecar
C.TheclockD.Thepapermaking
2.Safetyglassesareused__protectingyoureyes.
A.byB.asC.forD.to
3.Personalcomputers__1976.Ithaschangedtheworld.
A.InventB.inventedin
C.wasinventedinD.wereinventedin
4.Kites____messagesinthewarinthepast.
A.areusedforsendB.wereusedtosending
C.wereusedsendD.wereusedtosend
1.—IfeelveryhappythatI____tobethehost.
—Congratulations!
（07’江西）
A.chooseB.amchosen
C.waschosenD.havenchosen
2.TodayChinese________bymoreandmorepeoplearoundtheworld.（07’北京）
A.wasspoken B.isspoken
C.spoke D.speak
3．（07’重庆）
—Yourhometownhaschangedalot．
—Yes.Takealookatthesetallbuildings.
They______lastyear．
A.build B．built
C.wasbuilt D．werebuilt
4.—Whyistheclassroomsodirty?
—Sorry,sir.It_______yesterday．
Weforgottodoit．
A.don’tclean B.didn’tclean
C.weren’tcleanedD.wasn’tcleaned
四．用所给单词的适当形式填空.
1.Chinese________（speak）bymoreandmorepeopleintheworld.
2.—Didyougotojack’sbirthdayparty?
—No,I_________.（notinvite）
3.They_______（use）forseeinginthedark.
4.Thebuilding________（build）in2009.
5.It’susedfor________（heat）food.
6.Edisonwasagreat__________（invent）.
7.LinFengalwayshelpsothers,heisvery______（help）.
8.Whatdoyouthinkisthemosthelpful______（invent）.
9.He__________（goto）Qingdaobefore.
10.Hisfatherisusedto_________（drink）teainthemorning.
Homework:
Youmust:
①ReviewSectionA,includewords,phrase,grammar.
②FinishtheexercisebookofSectionA.
③Previewnextpage.
Ifyoucan：
Describeoneofyourinventions.Andthenwriteitdown.
课堂自评
SectionA（3a-4）Unit9
时间：
课堂表现
与上节课相比：
□进步 □基本不变 □退步
我已基本掌握的本节课的要点有：
我还未掌握的本节课的要点有：
我需要在这几方面加强学习：
组长评论
教师评论
（设计意图：
检查学生对本节课的知识掌握的情况，以便于及时的查漏补缺。
）
教学反思：
亮点：
本节课设计了多个环节来锻炼学生的阅读和口语表达能力。
充分地调动了学生的学习热情，特别是小组活动环节更是把整堂课推向了高潮。
不足之处：
时间分配上不太合理，练习处理时间不充分。
使用建议：
对话内容较多，可根据需要取舍。
Keys：
1.1）陈述2）不变
2.1）把某人独自留下2）leavefor,leave…for…3）beaway
3.1）猜测,原形2）动词不定式
一．1.usedfor2.invented3.invented4.usedfor5.invented
二．wasinvented,wasinvented,isused,isused,isused
三．DCDD CBDD
四.1.isspoken2.isn’tinvited3.areused4.wasbuilt
5.heating6.inventor7.helpful8.invention
9.hasbeento10.drinking
升级会员 