科普版英语小学五年级上lesson3(课堂PPT).ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,A computer has a keyboard,Lesson 3,1,hand,eye,/hnd/,/ai/,mouth,/mau/,ear,/i/,2,/kmpju:t/,computer,keyboard,mouse,/ki:b:d/,/maus/,screen,/skrin/,3,Lets learn,A computer has a screen.,肯定句,Does a computer have a screen?,一般疑问句,Yes,it does.,肯定答语,A computer has a mouse.,Does a computer have a mouse?,Yes,it does.,A computer has a keyboard.,Does a computer have a keyboard？,Yes,it does.,4,A TV has a screen.,Does a TV have a screen?,Yes,it does.,A TV doest have a mouse.,Does a TV have a mouse?,No,it doesnt.,A TV doest have a keyboard.,Does a TV have a keyboard?,No,it doesnt.,否定句,一般疑问句,否定回答,5,课 文,Oh,！,You have a nice,TV,.,No,its not a TV.Its,a computer.,But it looks like a TV.,Yes.But a computer,has a,keyboard,.,哦！,你有一台不错的,电视。,不,它不是电视。它,是一台电脑。,但是它看起来像电视。,是的。但是电脑有一,个键盘。,6,Whats that?,Its a,mouse,.,Does a TV have a,mouse,too?,No,it doesnt.,Where is the mouse?,Let me catch it.,Look!Here it is.,那是什么？,是鼠标。,电视机也有一个鼠标,吗？,不,它没有。,老鼠在哪?,让我来抓它。,看!它在这。,7,look like 看起来像,A look(s)like B.A看起来像B。,鼠标看起来像一只老鼠。,A mouse look,s,like a mouse.,电脑看起来像一台电视。,A computer look,s,like a TV.,8,动词单三,1.什么是动词单三形式?,2.哪些词才有单三形式?,3.什么时候用单三形式?,答:1.就是,当一般是句子开头的人/物,是,第三人称,、,单数(两个条件必须同时满足),时，,动词,(表示动作的词),必须,要用第三人称单数形式,即常在动词后加-s或-es.,2.be(am,is,are)动词和表示动作的词即动词,如:run跑,have吃、喝、有,like喜欢,9,meet遇见,swim游泳都是动词。,只有动词才有单三形式,。,3.判断动词用不用单三形式,我们主要看,句子开头的人/物,。当人/物,不,是我I,你you,复数,都可以看成是第三人称单数。这时be动词只能用is,动词要变成单三形式。,判断对人称最关键。,10,动词单三变化规则,1.一般在动词之后直接加s,在清辅音后发音为s,在浊辅音及元音后发音为 z,例如:stopstops s;makemakes s readreads z;playplays z,2.以sh/ch/s/x结尾的词+es,发音为iz,例如:teachteaches iz;watchwatches iz,3.以辅音字母+y结尾的,把y变成i,+es,读作iz,11,例如:studystudies buy-buys,4.辅音字母+o结尾的+es,读作z,例如:gogoes z,dodoes z,下面几个动词变成单三形式时,原词的,元音,部分的发音发生了较大的变化,请注意发音。如:1、do d,u:,做do,es,d,z,2、say s,ei,说,讲say,s,s,e,z,3、have hvhas hz,12,动词单三句如何变疑问句,He a book,has,Does,have,13,肯定回答:Yes,第三人称单数 does.,否定回答:No,第三人称单数 doesnt.,例如:Does she have a sister?,肯定回答:Yes,she does.,否定回答:No,she doesnt.,对问句的回答:,14,背,变疑问句步骤:,1.首先看句子中有没有be动词(am,is,are)若有,变否定直接在be动词后加not,变疑问直接把,be,动词提前(第,一,人称的词都要变为第,二,人称的词I变you,we变you,my变your,our变your)。,2.若句子中没有be动词,看句子中有没有can,若有,变否定直接在,can,后加not,变疑问直接把can提前。,3.若句子中既没有be动词也没有can,找,实意动词,。变一般疑问句分两种情况,是,单三,人称的,变疑问在句子开头加Does,并把动词,单三变原形(前面打死does后面去死s),不是单三人称的，变疑问，直接在句子开头加Do 就行了。,15,练习变疑问句,1.He likes dogs.,2.I love my cat.,3.We have a ruler.,4.He has an egg.,5.They have five cats.,6.Qiqi has a football.,7.She has two pencils.,8.I am a teacher.,Does he like dogs?,Do you like your cat?,Do you have a ruler?,Does he have an egg?,Do they have five cats?,Does Qiqi have a football?,Does she have two pencils?,Are you a teacher?,16,练习变否定句,1.His name is Tom.,His name is not Tom.,2.We like football.,We dont like football.,3.You have a computer.,You dont have a computer.,4.,They,have a keyboard.,They dont have a keyboard.,5.My parents have a car.,My parents dont have a car.,17,作 业,1.动词单三变化规则要求会背,例子要求会默写。,2.小小翻译家。,你有两只眼睛吗？是的,我有。,Do you have two eyes?Yes,I do.,他有四条腿吗？不,他没有。,Does he have four legs?No,he doesnt.,你们有牛奶吗？不,我们没有。,Do you have milk?No,we dont.,18,Thank You!,Goodbye,19,