Unit 4
- blackboard黑板chair椅子computer计算机;电脑desk书桌;写字台door门fan风扇light灯window窗; 窗户
- There is a desk.那里有一张课桌。
- There are two chairs.有两把椅子。
- Open/Close the window, please.请打开/关上窗户。
- Turn on/off the fan, please.请打开/关上风扇。
- Stand up, please.请站起来。
- Sit down, please.请坐下。
- Do not talk/eat, please.请不要说话/吃东西。