Unit6SectionB（3aSelfCheck）课件人教版九年级英语全册

Unit6Whenwasitinvented?SectionB(3a-SelfCheck）在语境中理解、识记并运用本单元单词、短语，独立完成相关习题。能根据写作要求，收集、准备素材，独立完成一篇介绍发明的文章。3.能运用本单元的词汇、句式及被动语态谈论发明，能够表达

与发明有关的观点和看法。Inourdailylife,therearemanyinventionsthatmakeourlifemoreconvenient.Doyouknowwhattheseinventionsareusedfor?Doyouknowothersmallinventionswithspecialdesigns?Doyouknowwhattheseinventionsareusedfor?Haveyouevermadeanydesignstomakelifebetter?Aninventionmaybeanewproductoranewwayofdoingthings.Inventionscomeaboutinmanyways.Mostofthetime,inventionshappenbecausesomeoneworkstosolveaproblem.Sometimesinventionsaretheresultofaccidents.Lookatyourschoolbags.Youhavepencils,pens,

crayons,rulersandsomebooks.Noneofthesethingswasplantedinfields.Theyweremadeinfactoriesandinventedbysomeone.Inventingisinterestingandexcitingandeveryonecanbeaninventor.

Doyouwanttobeaninventor?Whatisaninvention?Whatisaninvention?Listsomeinventionsthatyouknowandtheirinventors.Doyouthinkyoucanbeaninventor?Why?Readthepassageandanswerthequestions.Talkaboutyouropinionsoninventions.Thinkofsomethingthatyoudonotliketodo.Thenthinkofaninventionthatcouldhelpyou.Makenotes.3aProblem:________________________Newinvention:____________________Whatitisusedfor:______________________aspecialpenquicklytakingnotesinclasstakingnotesquicklyinclassWhatdoyouwanttoinventtosolveyourproblems?Imagineyouareabusinessperson.Writeadescriptionofyournewinvention.Trytoselltheinventiontotheclass.3aThisspecialpenwasinventedbyLiuJie.Ithasthreecolorsandisusedfor….Thinkofaninventionthatyouwanttointroducetoyourclass.Thenthinkabouttheadvantagesofit.体裁话题

时态人称段落布局审题说明文新发明一般过去时一般将来时第一、二、三人称开头：介绍发明的时间和发明人主体：介绍发明用处和解决的问题结尾：介绍期望Ithink…isaveryusefulinvention.我认为……是一项很有用的发明。…wasinventedby………是由……(某人)发明的…wasinventedin………是在……(某时间)发明的Itwasusedfor…

它被用来………ismadeof………是由……(材料)制成的UsefulsentencesWritebyyourselves独立创作Judgeingroups组内互评Showtime展示交流While-WritingCompleteyourwritingin10minutes.

ANewInvention_____________________

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OnePossibleVersionThisspecialpenwasinventedbyLiuJie.Ithasthreecolorsandisusedfortakingnotesquicklyinclass.Itwasinventedin2014.Itismadeofplasticandsteel.Itcanrememberwhattheteachersaid.Itcanalsohelpwritedownthemainpoints.Ithinkit’sausefulinvention.Doyouwantone?

ASSESSMENT（评价标准）Structure（结构）2分Isthearticledividedintoseveralparts?Content（内容）5分Areallthedetailsstated?Ifnot,addthemissingdetails.Language（语言）6分Anymistakes(spellingorgrammar)?Ifyes,correctthem.Anylinkingwords?Ifyes,circlethem.Anygoodvocabularyorsentences?Ifyes,underlinethem.Handwriting2分Isitcleanandtidy?Talkaboutyourpassagesaccordingtotheassessmentsontheright.SelfCheck1.Completethepassagewiththecorrectformsofthewordsinthebox.Itisoftendifficulttodecideontheinventorofcertaininventions.Thisisbecausesometimesafewpeoplemay______thingswhicharenearlythesame.It’shardtotellwhocameupwiththeideafirst.Someinventionscanalsoleadtootherinventions______________.Sosomepeople______whethertheinventorcameupwiththeideahimselforherself.Theythinkthattheinventorusedsomeoneelse’sideatocreatehisorherinvention.Thatiswhybooksor________usually________morethanoneinventorwhengivinginformationaboutinventions.inventinventdoubtmentionwebsiteallofasuddenallofasuddendoubtwebsitesmention2.Rewritethesesentencesusingthepassivevoice.1.Someonestolemywatch.______________________________________________2.Theyusedfiveeggstomakethisbigcake.______________________________________________3.Whendidtheyinventthepersonalcomputer?______________________________________________4.Theyaskedusnottoruninthehallway._____________________________________________5.Someonetookthevideobacktothestore.______________________________________________Mywatchwasstolen.Whenwasthepersonalcomputerinvented?Fiveeggswereusedtomakethisbigcake.Thevideowastakenbacktothestore(bysomeone).Wewereaskednottoruninthehallway(bythem).Invention:_________________________When:_________________________Who:_________________________Purpose:_______