资源描述:
《九上第五单元教案.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Unit5LookintoScienceLesson25:Let’sDoanExperiment!1I.Learningaims:Masterthenewwords:experiment,jar,upside,pour,correct,scientific,method,raincoat,force,pressure,concludeII.Learningimportantanddifficultpoints:1)Icoverthetopwithapieceofcardboardandholditthere.2)Iamsosur
2、eofmytheorythatBriancandotheexperimentoveryourheadandIknowyouwon’tgetwet.3)Theforceoftheairkeepsthewaterinthejar.4)Itisstrongenoughtoholdthewater.LanguagePoints:1.Icoverthetopwithapieceofcardboardandholditthere.我用纸板把上面盖住然后托住它。【用法】 句式cover…with…意为“用……覆盖……”,类似句式becover
3、edwith表示“被……覆盖”,这是一个系表结构。【举例】①Mymothercoveredthetablewithcloth.我妈妈用布把桌子盖住了。②Thebediscoveredwithpaper.床上盖满了纸。2.IamsosureofmytheorythatBriancandotheexperimentoveryourheadandIknowyouwon’tgetwet.我对布莱恩在你头上做实验的理论很有把握,并且你不会湿的。【用法】这句话中的句式besureof意为“对……有把握”;thatBriancandothee
4、xperimentoveryourhead是定语从句,修饰前面的名词theory。【举例】①Areyousureofthismatter?你对这件事情有把握吗?②ThisisthebookthatIborrowedfromthelibrary.这是我从图书馆借的书。3.Itisstrongenoughtoholdthewater.它力量很大足以把水托住。【用法】句中的enoughtodo…意为“足以……做某事”,这里的enough起副词作用,用在形容词或副词后作状语。【举例】Allanisoldenoughtogotowork.
5、艾伦到上班年龄了。Lesson26:KeeptheCandleBurning2I.Learningaims:Masterthenewwords:holder,shallow,lighter,match,examine,oxygenII.Learningimportantanddifficultpoints:1)Letthecandleburnfortwoorthreeminutes.2)Whenthecandlestopsburning,ithasusedupalltheoxygenintheair.3)Howfardoesit
6、rise?4)Becauseaboutonefifthoftheairismadeupofoxygen,thewaterrisesandfillsaboutonefifthofthejar.LanguagePoints:词汇详解1.Whenthecandlestopsburning,ithasusedupalltheoxygenintheair.2当蜡烛停止燃烧时,它就用完了空气中所有的氧气了。【用法】useup意思是“用完、用光”,这是“动词+副词”短语。这类短语用名词作宾语时,名词可用在副词前,也可用在副词后;用代词作宾语时
7、,代词则必须用在副词前。【举例】IgaveLiMingalotofpencils,buthehasusedthemupalready.我给了李明很多铅笔,但他已经把它们都用完了。2.Becauseaboutonefifthoftheairismadeupofoxygen,thewaterrisesandfillsaboutonefifthofthejar.因为组成空气的成分大约五分之一是氧气,所以水会上升并且填充瓶子的大约五分之一。【用法】短语bemadeupof意为“由……组成”,后加名词或代词作介词宾语。【举例】Thisgr
8、adeismadeupoftenclasses.这个年级是由十个班组成的。【用法】句中的one-fifth意思是“五分之一”,这是一个分数。分数的表达一般遵循以下规则:分子用基数词,分母用序数词;当分子大于一时,分母要用复数形式;并且其中的连字符号有时可以不要。