bag书包 pen钢笔 pencil铅笔 ruler尺子 eraser橡皮 book书 pencil-case铅笔盒 chair椅子 desk课桌 table桌子 wall墙   sharpener卷笔刀 notebook笔记本 dictionary词典 

1. What’s this?
   It’s a desk.
2. Is it a chair? (Is this a chair?)
   Yes, it is. / No, it isn’t.
3. What’s that?
   It’s a pen.
4. What are these?
  They are pencils.
5. Are they pens?
  Yes, they are. / No, they aren’t.
6. What are those?
  They are pens.
7. How many desks are there?
   There are seven.
8. Is this your pen?
   Yes, it is. / No, it isn’t.
9. Is this her/his eraser?
    Yes, it is. / NO, it isn’t. It’s my eraser.
10. Close the door.
11. Open the window.