九年级英语上册《unit 4 amazing science topic 2 when was it invented section b》学案 仁爱湘教版

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1、九年级英语上册《Unit4AmazingScienceTopic2WhenwasitinventedSectionB》学案（无答案）学习目标：课前预习:一．1a导学：读对话，了解大意后填空。Thechildren___________(正在参观)theScienceMuseumtogether.Therewerethree____________(发明物)theyvisited.______________(白炽灯)________________(被广泛使用)inour_____________(日常生活)_____________(在过去).It_________

2、____(被发明)____(被)ThomasEdisonin1897andheinvented__________(超过)onethousandthings__________________(在他的一生中).Theradio____________(被发明)_____(被)GuglielmoMarconiin1895.What'smore,theyvisitedadifferentairplane,it___________(被发明)byWilburandOrvillein1903.1a语言点导学：It’ssaidthatEdisoninventedmorethan

3、onethousandthingsduringhislife.译：_________________________________1）It’ssaidthat…意为“据说”。类似的用法还有：It’sreportedthat…(据报道);It’scertainthat…(……是一定的);It’simpossiblethat…(……是不可能的)等.2)inventv.发明;inventionn.发明物;inventorn.发明家Eg:These___________________manygreat__________.这些发明家发明了许多伟大的发明。3）duringo

4、ne’slife某人的一生=_________________二、3a导学：读短文，找出并翻译下列短语。3a知识点导学：1．ThereisDNAinmostlivingthings,includinghumanbeings.包括人在内的大部分生物都有DNA。1）includingprep.包括Therearetwelveofus,_____________.包括我和汤姆共有12个人。2）humanbeing为可数名词，意为“人类”，常用复数humanbeings，而man也可作不可数名词，指人类。human也指人类，复数humans.2.Withitshelp,sci

5、entistsareabletoexploremorewaystotreatmanyseriousdiseasessuchasheartdisease,AIDSandcancer.在它（克隆技术）的帮助下，科学家能够发现更多治疗心脏病，艾滋病和癌症等许多严重病的方法。1)withone’shelp译为：_____________=_________________2)totreatmany…动词不定式作后置定语修饰前面的morewaystreatv.治疗，医治treat…as…=_____________意为“把……看做……”Theteacher_______thes

6、tudents_____herchildren.1．课堂活动：检测1a预习导学，并学习1a。2．完成1b。用句型：_______wasinventedby_______in_______.练习表格内容。3．完成2和4。4．学习3a.1)预习检测。2)Fastreading：找出文中含有被动语态的句子。3)ReadandcheckTorF()1.Theclonedsheep,Dolly,wasclonedinCanada.()2.Scientistshaveclonedpigs.()3.EverypartofourbodyhasdifferentDNA.()4.Ther

7、eisDNAinmostlivingthings.4)However,Dolly’sDNAisexactlythesameasthatofthesheepshewasclonedfrom.句中的that指代_____________课后巩固：Ⅰ.用所给词适当形式填空.1.Edisonwasagreat________.He_______morethanonethousand________.(invent)2.Englishis_______(wide)spokenintheworld.3.It________(say)thatyouhavesent