《lesson3acomputerhasakeyboard课件》小学英语科普2011课标版三年级起点五年级上册课件_1

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1、Lesson3Acomputerhasakeyboard语法1：陈述句变疑问，be动词往前提,句末问号加上去。变否定be后not加上去。语法2：陈述句变疑问，情态动词can往前提,句末问号加上去。变否定can后not加上去。语法3：当句子中没有be动词,也没有情态动词can时，借助do来帮忙,变否定动词前don’t加上去。NewWordscomputer/kEm'pju:tE/计算机screen/skri:n/荧屏keyboard/'ki:bC:d/键盘mouse/maHs/老鼠，鼠标like/laIk/喜欢，像catch/kZtS/抓住guess/Ges/猜tall/tC:l/高的sh

2、ort/SC:t/短的NewWordsleg/leG/腿head/hed/头write/raIt/写letter/letE/信e-mail/'i:meIl/电子邮件looklike看起来像amouseaVCDplayerakeyboardascreenacomputerHehas…weyoutheyIhaveabag.sheit（第三人称单数）三单havehave小淘气见到三单要离去要用has来代替Acomputerhasamouse.语法1：陈述句变疑问，be动词往前提,句末问号加上去。变否定be后not加上去。语法2：陈述句变疑问，情态动词can往前提,句末问号加上去。变否定can后

3、not加上去。语法3：当句子中没有be动词,也没有情态动词can时，借助do来帮忙,变否定动词前don’t加上去。语法4：当句子中没有be动词,也没有情态动词can，主语是三单时，借助does来帮忙,后面动词用原形，句末问号加上去，变否定动词前doesn’t加上去。Doesacomputerhave_____?Yes,itdoes.Acomputerhas______.DoesaTVhave_____?No,itdoesn’t.Doyouhaveabag?Yes,Ido.Doesacomputerhaveakeyboard?Yes,itdoes.Ihaveabag.Acomputerha

4、sakeyboard.1找动词当动词是实义动词时，变疑问变否定do和does勿忘用2看主语第三人称用助动词doesDoyouhaveabag?No,Idon’t.Doesacomputerhaveakeyboard?No,itdoesn’t.Idon’thaveabag.Itdoesn’thaveakeyborad.Q:What’sthedifferencebetweenTVandcomputer?Oh!YouhaveagoodTV.No,it’snotaTV.It’sacomputer.ButitlookslikeaTV.Yes.Butacomputerhasakeyboard.三单三

5、单What’sthat?It’samouse.DoesaTVhaveamouse,too?No,itdoesn’t.Whereisthemouse?Letmecatchit.Look!Hereitis.Homework听磁带写1单词6英2汉6音标2造句共6个1英1汉3课文2英1汉过课A.背课文，默写1英B.单词听写