Lesson 17 Lets Buy Postcards,You write an e-mail on,a computer,This is an e-mail,These are e-mails,A postcard has a picture on it,This is a postcard,This is a letter,You write a letter on paper,These are letters,This is a postcard,What do you know about postcard,These are postcards,This postcard has the Palace Museum on it,This postcard has a picture of pandas on it,Lets say these postcards,We buy postcards in a shop,post office,Lets chant,E-mail, this is an e-mail. Letter, this is a letter. Pos
