五年级上册英语课件Lesson3Acomputerhasakeyboard科普版.ppt

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?自学提示：1.有be动词的如何变一般疑问句？2.有情态动词的如何变一般疑问句？3.没有be动词，情态动词，主语不是第三人称单数怎么变？当主语是第三人称单数又如何变？，mouseDoes a TV have a mouse? No,it doesn't.keyboardDoes a TV have a keyboard?No,it doesn't.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.把下列句子改为一般疑问句并做肯定,否定回答。

1.He has a new friend.Does he have a new friend?Yes,he does./No,he doesn't. 2.She has a red cap.Does she have a red cap?Yes,she does ./No,she doesn't.3.Tom has a white dog.Does Tom have a white dog.Yes,he does./No,he doesn't.4. I have a football.Do you have a football? Yes,I do./No,Idon't.。