2. does and don ’ ts 要与不要 十要与十不要 Ten does and ten don ’ ts

3. Some does and don ’ ts during class: Does: Ask your teacher for help if you don ’ t understand something. Listen to the teacher carefully. Take some notes. Do what the teacher tells you to do. Follow your teacher ’ s instruction. Don’ts: Don’t… use your mobile phones. eat anything. read story books. laugh and talk loudly with your partner.

4. Unit 2 In the lab Dialogue Lesson 5 Mr. Zhu is showing the students of class 4 the chemistry lab.

5. Read the dialogue carefully and find out some does and don’ts in the chemistry lab from the dialogue : Does: Listen to your teacher. Do what he or she tells you to do. Follow your teacher’s instructions. Tidy the lab and put everything back on the cupboards. Make sure the electricity is turned off and the windows are shut. Turn off the lights and lock the door. Wash your hands with soap at the end of your experiment. Don’ts: Don’t come in here without a teacher. Don’t touch anything unless your teacher tells you to.

6. The tape of lesson 5 in Unit 2: Listen to the tape carefully with books closed, and pay attention to the pronunciation and intonation.

7. If we were in the chemistry lab and you were a teacher, you would give us some instructions for using the lab. Does: Listen/ your teacher/ do what Follow/ teacher’s/ instructions Tidy/ lab/ put/ everything/ cupboards/ when/ have finished Don’ts: Come in/ without a teacher Touch/ unless/ teacher Forget/ turn off/ lock/ door Forget/ wash/ at the end of Make sure: electricity/ turn off/ windows/ shut

8. Give your partner instructions in the following two situations( 情境 ) ： In the cinema: – Smoke – Speak loudly – Sit in other’s seat – Walk around … In the sound lab: – Come in/ without a teacher – Listen/ your teacher – Follow/ teacher’s/ instructions – Forget/ turn off/ lock – Make sure: electricity/ turn off/ windows/ shut …

9. Give your partner instructions in the following two situations( 情境 ) ： In the library: – Speak loudly – Eat any food – Take good care of the books – Take the books away without permission( 允许 )...

10. First of all In the first place 首先 I am interested in coins( 硬币 ), but first of all I am a stamp collector( 收集者 ). First of all, let ’ s introduce each other. First of all, you must be honest. Study: first, at first

11. Not … without … I can ’ t get much progress in my studies without your help. Fish cannot live without water. I cannot finish my work without your help.

12. Once 一旦 Once he understand why he must study, he will study hard. Once you show any fear( 害怕 ), he will attack( 攻 击 ) you. Once she arrives, we can start. He comes here once a month. He once knew her, but they are not friends now.

13. unless Don ’ t come here unless the teacher with you. (Don ’ t come here without a teacher.) Don ’ t come here if the teacher is not with you. I will come back unless the weather is bad. I will come back if the weather is not bad. You will do well in the English examination unless you do not do your homework.

14. Make sure 一定要，保证作到， 弄清 Make sure you get there on time. Have you made sure of the time of the train. Make sure the windows are shut. Make sure to shut the windows. X Study: be sure of \ to do something

15. Shut close, lock up Shut the door please. All the shops are shut now. Shut down 关闭（企业）

16. Allow allow somebody to do something The police would not allow that. We don ’ t allow smoking here. Smoking is not allowed here. We don ’ t allow people to smoke here. People are not allowed to smoke here. Compare: allow, let, permit, promise

17. Words and expressions of lesson 5: First of all Allow Once Unless Experiment Cupboard Electricity Turn off Shut Finally Basin By the side of soap