教育专题：七上U1T3SB.ppt
Topic 3What class are you in?Section BUnit 1 Making New FriendsA:Hello,I am Kangkang.Whats your name?B:My name is Lily.A:How old are you?B:I am thirteen.A:What class are you in?B:I am in Class Three,Grade Seven.A:Whos that?B:Thats Maria.Lets review.This is a CD.This is a TV.Whats this in English?Its a pencil.an appleWhats this in English?Its an erasera book a mapa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：用法的区别：a cara pencila pena booka mapan applean applean orangean eggan eraserapplerulerpencildeskaaaaneraseranA:Whats this in English?B:Its an eraser.A:How do you spell it?B:E-R-A-S-E-R,eraser.Lets say together.Section BLook,listen and say.Excuse me,whats this in English?Its an eraser.（视频（视频P19-1a）mapdeskpenpencileraserA:Whats this in English?B:Its a pen.A:How do you spell it?B:P-E-N,pen.A:Thank you.B:Thats OK.A:Whats that in English?B:Its a toy.A:Can you spell it,please?B:Yes.T-O-Y,toy.A:Thanks.B:Youre welcome.bookHow do you spell it?Whats that in English?Its _.B-O-O-K,_.a bookA:Whats this in English?B:Its A:How do you spell it?B:a pen.P-E-N,pen.a pencil-box.P-E-N-C-I-L-B-O-X,pencil-box.a book.B-O-O-K,book.an eraser.E-R-A-S-E-R,eraser.a ruler.R-U-L-E-R,ruler.Listen 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 welcomethis(录音录音P19-1b)A:Excuse me,whats _ in English?B:Its _ apple.A:_ _ _ _?B:Yes,A-P-P-L-E,apple.A:_.B:Thats OK.anCan you spell itThanksthatWhats this/that in English?Its a/an How do you spell it?/Can you spell it?PracticeListen and complete the conversation with the correct words.Then practice with your partner.Is that a toy,too?An eraser?Wow!No,its an _.No,it isnt.Its a _.Is this a _?（视频（视频P20-2a）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,_.It is a pencil.it isit isntA:Is that a desk?B:Yes,it is.A:Is this an orange?B:No,it isnt.Its an apple.A:Is he Tom Cruise?B:A:B:No,he isnt.He is from America.Yes,he is.Is he from England?A: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。
