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1、Topic 3How old are you?Section BUnit 1 Making New FriendsA:Whats your name?B:My name is.A:Where are you from?B:I am from.A:How old are you?B:I am.years old.A:What class are you in?B:I am in Class.,Grade Seven.B:Thats.Lets review.a CD a TVWhats this in English?Its a/an.a pencilan appleWhats that in E
2、nglish?Its an erasera book a mapa cara pencila pena booka mapan applea和和an的区别的区别1.a 用在以辅音音素开头的单词前。用在以辅音音素开头的单词前。例如：例如：a book，a desk2.an 用在以元音音素开头的单词前。用在以元音音素开头的单词前。例如：例如：an egg，an applea/an被称作不定冠词，用在单数可数名词前，表达某一被称作不定冠词，用在单数可数名词前，表达某一个人或事物中的一个，相当于汉语的个人或事物中的一个，相当于汉语的“一一”，但不强调但不强调数目概念。数目概念。a/an用法的区别：用法
3、的区别：_ear_actor_hen_toy_ D_elephant_hat_umbrella_rabbit_hour_interesting book_easy question_orange dress_apple pie_X-ray machine_ice cream_ f_ UaaaaaananananananananananananaapplerulerpencildeskaaaaneraseranPair workWhats that in English?Its Section BLook,listen and say.Excuse me,whats this in Englis
4、h?Its an eraser.mapdeskpenpencileraserA:Excuse me,whats this in English?B:Its an eraser.A:How do you spell it?B:E-R-A-S-E-R,eraser.A:Thank you.B:Thats OK.1a look,listen and say.A:Excuse me,whats that in English?B:Its a map.A:Can you spell it,please?B:Yes.M-A-P,map.A:Thanks.B:Youre welcome.Whats this
5、/that in English?Its a/an How do you spell it?/Can you spell it?PracticeListen and complete the conversations.A:Excuse me,whats _ in English?B:Its _ pencil.A:How do you spell it?B:P-E-N-C-I-L,_.A:Thank you.B:_ _.apencilYoure welcomethisA:Excuse me,whats _ in English?B:Its _ apple.A:_ _ _ _,please?B:
6、Yes,A-P-P-L-E,apple.A:_.B:Thats OK.anCan you spell itThanksthatmapmaperasereraserpenpenpencilpencildeskdeskA:Whats this/that in English?B:Its a/an.A:How do you spell it?/Can you spell it?B:.A:Thank you./Thanks.B:That ok./Youre welcome.Listen and complete the conversation with the correct words.Then
7、practice with your partner.Is that a toy,too?An eraser?Wow!No,its an _.No,it isnt.Its a _.Is this a _?telephonetoyeraserThat is a toy.Is that a toy?This is an eraser.Is this an eraser?be动词的位置发生了变化。动词的位置发生了变化。句型也由陈述句变成了一般疑问句。句型也由陈述句变成了一般疑问句。A:Is this an eraser?B:Yes,_.A:Thank you.A:Is that a pen?B:No
8、,_.It is a pencil.it isit isntA:Whats this in English?B:Is it a/an?Example:Whats this in English?Is it a/an?Yes,it is.How do you spell it?/No,it isnt.Please try again.Touch and guess what it is with eyes covered.Use sentences of identifying objects.Sum up1.Patterns:Whats this/that in English?Its a/an How do you spell it?/Can you spell it?Is this/that a/an?Yes,it is./No,it isnt.2.New words:a/an,spell,can,please（1）总结：在学过的名词中，哪些前面加a，哪些前面加an。（2）参考1a/2a，自编两则对话。