1、Welcome to our classIs this your pencil?Unit ThreeIs this a pencil box?Yes, it is.Is this a ruler?No, it isnt(=is not).Its an eraser.Is this a pencil?Yes, it is.Is that a ruler?No, it isnt. Its a key.Is this a pen?Yes, it is.T-SsIs that a pencil box?No, it isnt.Its an eraser.Is this an apple(苹果 )?No
2、, it isnt.Its an orange.T-SsIs that a schoolbag?Yes, it is.Are these books?Yes,they are.Are those books?No,they arent.Theyre pencil boxes.Are these pencils?Yes,they are.Are those pencils?No,they arent.Theyre pens.Is this/that a/an.?Yes, it is.No, it isnt. Its a/anAsk and answer with your partners, using the things around you.(用你身边的物品与同伴进行对话练习）Are these /those .?Yes,they are.No, they arent. They are.
