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1、Unit 1 Making New FriendsTopic 3 How old are you?Section Ba deska pena pencilWarming upa booka busa boxa mapan applean orangean eggan eraser 在英语中，在英语中，a,an和和the称为冠词，其中称为冠词，其中a和和an是不定冠词，是不定冠词，the是定冠词。不定是定冠词。不定冠词冠词a和和an 都可以表示都可以表示“一一(个、支、个、支、张、块张、块)”的意思。它们在用法上的意思。它们在用法上有什么区别呢？请仔细观察下面的例子，有什么区别呢？请仔细观察下面
2、的例子，然后补全结论部分所缺内容。然后补全结论部分所缺内容。A.a“w”,an“s”,an“f”B.an egg,a rulerC.a red apple,an English teacher D.Is that his map?This is my schoolbag.She is in this room.【结论】【结论】1.从从A、B组例子中可以看出，组例子中可以看出，_ 用在以辅用在以辅音音素开头的字母或单数名词之前，音音素开头的字母或单数名词之前，_ 用在以元音音素开头的字母或单数名词之用在以元音音素开头的字母或单数名词之前。前。2.从从C组例子中可以看出组例子中可以看出,当名词前有
3、修饰当名词前有修饰语时，应以语时，应以_ (名词名词/修饰语修饰语)开头的开头的音素决定用音素决定用a还是用还是用an。3.从从D组例子中可以看出，若名词前有物主组例子中可以看出，若名词前有物主代词代词his,my等或指示代词等或指示代词this,that 等修饰等修饰限定时限定时,_(能能/不能不能)同时使用冠词。同时使用冠词。ana 修饰语修饰语不能不能【运用】【运用】请选用请选用a或或an完成下列句子或对话。完成下列句子或对话。1.It isnt _ “u”.Its _“v”.2.Is that _ egg?Yes,its _ big egg.3.Whats this in Englis
4、h?Its _ English book.4.Its _“h”,not _“n”.aa anaanananA:Whats this in English?B:Its a pen.A:How do you spell it,please?B:P-E-N,pen.A:Whats this in English?B:Its a book.A:Can you spell it,please?B:B-O-O-K,book.A:Whats this in English?B:Its a bag.A:How do you spell it,please?B:B-A-G,bag.-Is this a penc
5、il?-Yes,it is.A:Is this an orange?B:No,it isnt.Its an apple.-Is that a car?-No,it isnt.Its a bus.Is this/that a/an?Yes,it is./No,it isnt.Its a/anComplete the conversations.A:Whats this in English?B:_ a pencil-box.A:Can you spell it,please?B:_ItsP-E-N-C-I-L-B-O-X,pencil-box.A:Whats that in English?B:
6、_ an apple.A:_?B:A-double P-L-E,apple.ItsHow do you spell itA:Is this an eraser?B:Yes,_.A:Is that a pen?B:No,_.It is a pencil.it isit isntI.Choose the right answer.1._ do you spell it,please?A.What B.How C.Where2.-Is that a car?-No,_.A.it isnt B.that is C.that isnt3.-This is _ eraser.-_ her eraser.A
7、.a;Its B.an;Its C.an;ItsBAC4.Its my ruler.(改为否定句改为否定句)It _ my _.5.Whats this _(用英语用英语)？Its _(一支铅笔一支铅笔).isntrulerin Englisha pencilII.请选用请选用a/an完成下列句子完成下列句子。1.She is _ English girl.2.It is _ good apple.3.Its _“m”,not _“w”.4.That is _ old car.5.This is my mom.She is _ teacher.anaanaanaIII.请根据所给情景用适当的词语完请根据所给情景用适当的词语完成下列句子或对话。成下列句子或对话。1.Excuse me,is this your toy?Yes,_ is.2.Whats that in English?_ a ruler.itIts3._ you _ it,please?Yes,I can.4._ that an egg?Yes,_ is.5.This _ a car,but its a bus.CanspellIsitisnt