科普版英語(yǔ)五上Lesson 3A computer has a keyboard課件3

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1、1.Learn the new words: screen , mouse ,keyboard.2.Learn the sentence:-Does a TV have a screen? -Yes,it does.Iam a cat.Are you a cat?Is this a dog?This is a dog.I can swim. I have a ruler.Do you have a ruler?Can you swim?screenA TV has a screen?自學(xué)提示：1.有be動(dòng)詞的如何變一般疑問(wèn)句？2.有情態(tài)動(dòng)詞的如何變一般疑問(wèn)句？3.沒(méi)有be動(dòng)詞，情態(tài)動(dòng)詞，主語(yǔ)不

2、是第三人稱單數(shù)怎么變？當(dāng)主語(yǔ)是第三人稱單數(shù)又如何變？，mouseDoes a TV have a mouse? No,it doesnt.keyboardDoes a TV have a keyboard?No,it doesnt.Does a computer have a screen?Yes,it does.Does a computer have a mouse?Yes ,it does.Does a computer have a keyboard?Yes,it does.把下列句子改為一般疑問(wèn)句并做肯定,否定回答。1.He has a new friend.Does he have a new friend?Yes,he does./No,he doesnt. 2.She has a red cap.Does she have a red cap?Yes,she does ./No,she doesnt.3.Tom has a white dog.Does Tom have a white dog.Yes,he does./No,he doesnt.4. I have a football.Do you have a football? Yes,I do./No,Idont.