1、h haveave的第三人称单数用法的第三人称单数用法授课老师：huaerhave的第三人称单数用法1.have在什么情况下用has？2.变为否定句需要注意什么？3.如何变为一般疑问句？IhaveHello!My names Tom.a baseball.a ping-pong bat.a basketball.have表示某人表示某人“有有”Tina a tennis ball.a soccer ball.two volleyballs.JohnTinaJohnhashashas也表示某人也表示某人“有有”请思考：请思考：为什么用为什么用has?请观察：规则一：规则一：肯定句中当主语为肯定句
2、中当主语为第三人称单数第三人称单数时，时，动词动词(have)要变成要变成_.IIIII ISheHeThe girlThe boyJohn Tinahavehavehavehavehavehave a tennis ball.a ping-pong bat.a basketball.a soccer ball.some volleyballs.two basketballs.sssssshasDoes a tennis ball.a soccer ball.JohnhasYes,John have a tennis ball?hedoes.一般疑问句和否定句一般疑问句和否定句 请思考：请思考
3、：has为什么变为为什么变为have?Does a tennis ball.a soccer ball.JohnhasNo,John have a basketball?hedoesnt.John doesnt have a basketball.SheHeThe girlThe boyJohnTinadoesntdoesntdoesntdoesntdoesntdoesnthavehavehavehavehavehave a tennis ball.a ping-pong bat.a baseball.a soccer ball.some volleyballs.two basketballs
4、.ssssss请观察：如何变为否定句？请观察：如何变为否定句？规则二：变否定句要规则二：变否定句要(在在has前前)加加 _，动词动词(has)_.SheHeThe girlThe boyJohnTinadoesntdoesntdoesntdoesntdoesntdoesnthavehavehavehavehavehave a tennis ball.a ping-pong bat.a baseball.a soccer ball.some volleyballs.two basketballs.ssssssdoesnt改为改为have(原形原形)Exercise:Johnhas a tenn
5、is ball.Johndoesnt have a tennis ball.Tinahas a ping-pong bat.Tinadoesnt have a ping-pong bat.规则三：变一般疑问句要在句首加规则三：变一般疑问句要在句首加动词动词has要要_.Does变为变为have一加一加Does，二变，二变have，三问号，改小写，三问号，改小写请观察：如何变为一般疑问句？DoesDoesDoesDoesJohnTinaHeShehavehavehavehavessss a tennis ball.a basketball.a soccer ball.two basketball
6、s.?hsExercise:Johnhas a tennis ball.DoesJohnhave a tennis ball.Shehas a ping-pong bat.?Doesshehave a ping-pong bat.?规则二：变否定句要规则二：变否定句要(在在has前前)加加 _，动词动词(has)_.规则一：规则一：肯定句中当主语为肯定句中当主语为第三人称单数第三人称单数时，时，动词动词(have)要变成要变成_.hasdoesnt改为改为have(原形原形)Summary规则三：变一般疑问句要在句首加规则三：变一般疑问句要在句首加动词动词(has)要要_.Does变成变成ha
7、veExercise 1：(选填have,has)1.I _ a hat.2.My brother _ a cat.3.She _ a dog and he _ a fox.4.They _ some books.5.Does Paul _ a car?6.He doesnt _ a bike.havehavehashashashavehaveMy brotherShe heThey Doesdoesnt1.She has a basketball.变否定句：变否定句：变一般疑问句：变一般疑问句：2.Mike has two basketballs.变否定句：变否定句：变一般疑问句：变一般疑问句：She doesnt have a basketball.Does she have a basketball?Mike doesnt have two basketballs.Does Mike have two basketballs?Exercise 2：自我评价表学习内学习内容容已掌握已掌握概概念模糊念模糊不不清清楚楚规则规则一：一：havehave何何时变为时变为hashas规则规则二：二：变为变为否定句否定句规则规则三：三：变为变为一般疑一般疑问问句句THANKSTHANKS
