1. UNIT 3 SECURITY

2. Teaching objectives Students will be able to learn the new words and phrases; understand the main idea of the text; master the use of parenthesis in the sentence; comprehend the writing strategy.

3. Teaching procedures Assignment Detailed study of the text Understanding the text Warm-up activity

4. Security Part I Warm-up activity

5. National Treasure

7. security devices biometric access- denial system electronic combination lock sensors heat monitors video monitors Part I Warm-up activity bulletproof glass

8. Part II Understanding the text The Land of the Lock Text A

9. In the house where I grew up, it was our custom to leave the front door on the latch at night. I don’t know if that was a local term or if it is universal; “on the latch” meant the door was closed but not locked. None of us carried keys; the last one in for the evening would close up, and that was it. Understanding the text Para. 1

10. It has been replaced by dead-bolt locks, security chains, electronic alarm systems and trip wires hooked up to a police station or private guard firm. Many suburban families have sliding glass doors on their patios, with steel bars elegantly built in so no one can pry the doors open. Understanding the text Para. 4

11. Words & Phrases Sentences None of us carried keys. No one can pry the doors open. Tenses grew up ， was (simple past) has been replaced (present perfect) Para. 1 Para. 4 Compare & Contrast on the latch Part II Understanding the text dead-bolt locks, security chains, electronic alarm systems, trip wires and sliding glass doors

12. Part III Detailed Study of the text Para. 3 Suburbs and country areas are, in many ways, even more vulnerable than well-patroled urban streets. Statistics show the crime rate rising more dramatically in those allegedly tranquil areas than in cities. At any rate, the era of leaving the front door on the latch is over.

13. Big cities or countryside, which is better for living? From 《托福官方题库作文大全》 Rural and country areas are, in many ways, even more attractive than well- known cities and towns. (topic sentence) Statistics show the British people’s average life-span rising more dramatically in those allegedly tranquil areas than in cities. (supporting sentence) At any rate, the competitive pressure in rural areas is much less. (supporting sentence) From 《英语五段作文法》

14. Para. 3 “Suburbs and country areas are, in many ways, even more vulnerable than well-patroled urban streets”.in many ways Part III Detailed study of the text Parenthesis Parenthesis-used sentences in the text. Paras 3/ 5/ 7/ 9/ 16/ 18

15. Practice （ Group Work ） Put “in my mind” as a parenthesis into the following sentence. Great men in history can always be modest, which is vital to their success. From 《大学英语初级写作教程》 Part III Detailed study of the text

16. Great men in history, in my mind, can always be modest, which is vital to their success. Great men in history can always be modest, which, in my mind, is vital to their success. Great men in history can always be modest, in my mind, which is vital to their success. From 《大学英语初级写作教程》 Part III Detailed study of the text

17. 1 Go over the language points we’ve learned today. 2 Google the use of “parenthesis” online. 3 Write a paragraph on the topic of “ Should cameras be installed in public places?” Part IV Assignment

19. in many ways Original: TV and newspapers are different in many ways, even though their aims may be the same. Revised: TV and newspapers are, in many ways, different even though their aims may be the same.

20. on the latch Every night, the mother left the door on the latch so that her lost daughter would be able to come straight in. Part II Understanding the text

21. latch v. 1.to obtain something Example ： The collector knew that he had latched onto a rare antique.

22. Part II Understanding the text latch v. 2.to begin to understand something Example ： He talked for almost an hour, but the committee still failed to latch onto his proposal.

23. Part II Understanding the text latch v. 3.to become closely connected to someone or something Example ： That student tried every means to latch onto our club.

24. Part II Understanding the text

25. security chain dead-bolt lock Part II Understanding the text

26. electronic alarm system Part II Understanding the text

27. trip wire sliding glass door with steel bars Part II Understanding the text