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1、What is the difference between the two pictures?第1页/共21页第2页/共21页1.New and old new trousersold sweaternew sweaterold trousers第3页/共21页1.New or Old?1.New or Old?newold第4页/共21页newold第5页/共21页oldnew第6页/共21页new a new sweateroldan old sweaterThis is a new sweater.This is an old sweater.第7页/共21页这是一件新毛衣。这是一件新
2、毛衣。这是一件旧毛衣。这是一件旧毛衣。This is a new sweater.This is an old sweater.a和和an是不定冠词，用于单数可数名词之前，是不定冠词，用于单数可数名词之前，表示一（个、头、只表示一（个、头、只）1、a 用在以辅音因素开头的单数可数名词前。用在以辅音因素开头的单数可数名词前。2、an用在以元音因素用在以元音因素(a、e、i、o、u)开头的单数可数名词前。开头的单数可数名词前。第8页/共21页oldold trousersnewnew trousersThese are new trousers.These are old trousers.第9页
3、/共21页This is a new sweater.这是一件新毛衣。This is an old sweater.这是一件旧毛衣。This is 这是（指单数）These are new trousers.这是一条新裤子These are old trousers.这是一条旧裤子。These are 这些是（指复数）第10页/共21页l1、is 是（用于he,she,it及单数可数名词和不可数名词后）Example:It is a book.She is a girl.He is ten years old.u2、are 是（用于we,you,they及复数名词后）Example:We ar
4、e happy.You are a clever student.They are some books.n3、new 新的Example:This is a new book.第11页/共21页4、old 旧的；年老的；.岁的Example:This is a old book.It is old.they are old5、it 它Example:It is a new skirt.Is it a new skirt?Yes,it is./no,it isnt.6、they 他们；她们；它们Example:They are old sweaters.第12页/共21页Can you int
5、roduce(介绍）the pictures（图片）?This is a new sweater.This is an old sweater.These are new trousers.These are old trousers.第13页/共21页trouserssweaterskirt2.Lets do it!2.Lets do it!第14页/共21页3.I like your skirt.skirt第15页/共21页Thanks.I like your skirt.Is it new?Yes.Its my birthday gift.第16页/共21页I like your tro
6、users.Are they new?No.Theyre old.They re nice.Theyre my favourite trousers.第17页/共21页be动词动词 is，are开头的句子为一般疑问开头的句子为一般疑问句，句，以以is开头的句子开头的句子肯定回答：肯定回答：Yes，it is.否定回答：否定回答：No，it isnt.以以are 开头的句子开头的句子肯定回答：肯定回答：Yes，they are.否定回答：否定回答：No，they arent.第18页/共21页Lets sing the song again!第19页/共21页Goodbye!第20页/共21页感谢您的观看！第21页/共21页