【正文】
tense eg. It was invented in 1893. words and phrases: by accident, accidental, boil, smell, saint, bell take place, doubt, without doubt, fridge, lock translate, earthquake, sudden, all of a sudden biscuit, cookie, instrument, nearly, musical ruler, remain, national, trade, low, somebody 三、 Teaching difficult points: the passive voice of past tense eg. It was invented in 1893. 四、 Teaching Aids: 1. a tape recorder 2. the blackboard 3. a puter with PowerPoint 五、 the second period(for one class) 六、 Teaching steps Step1: Recycling: 1. invention 2. T 3. car 4. telephone 5. special 6. icecream 7. shoes 8. tea 9. century 10. country 11. inventor 13. potato 14. chip 15. history 16. mistake 17. basketball 18. idea 19. invent 20. discover 21. create 22. popular 23. sweet 24. salty 25. It is said that ... 26. It is believed that ... Step2: Learn the new words by accident, accidental, boil, smell, saint, bell take place, doubt, without doubt, fridge, lock translate, earthquake, sudden, all of a sudden biscuit, cookie, instrument, nearly, musical ruler, remain, national, trade, low, somebody Step3: Read the passage quickly and match each paragraph with its main idea.