九年级英语全册 Unit 6 When was it invented Section A（3a-4c）教案 （新版）人教新目标版-（新版）人教新目标版初中九年级全册英语教案.doc

Unit 6 When was it invented?Section A，3a-4c 一、Teaching Aims: 1.to learn and to use 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 2.to use the passive voice of past tense eg. It was invented in 1893.二、Teaching key points: 1. the passive voice of past tense eg. It was invented in 1893.2.new 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 computer with PowerPoint五、the second period(for one class)六、Teaching stepsStep1: Recycling:1. invention 2. T 3. car 4. telephone 5. special 6. ice-cream 7. shoes 8. tea 9. century 10. country 11. inventor 13. potato14. 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 wordsby 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, somebodyStep3: Read the passage quickly and match each paragraph with its main idea. Paragraph 1 Lu Yu and his book Cha Jing Paragraph 2 How tea spread to other countries Paragraph 3 How tea was invented by accidentStep4: Read the passage again and answer the questions.1. When was tea first drunk?2. How was tea invented?3. Who is called “the saint of tea”?4. What is Cha Jing about?5. When was tea brought to other countries?Step5: Complete the sentences with the correct forms of the verbs in the box.invent drink bring produce trade1. One of the worlds favorite drinks was_ by accident.2. Tea was first_ by Shen Nong 5,000 years ago.3. A nice smell was_ when the tea leaves dropped into the hot water.4. Tea was_ to Korea and Japan during the 6th and 7th centuries.5. Tea is now_ between many different countries.Step 6: Key points1. It is said that a Chinese ruler called Shen Nong first discovered tea as adrink.It is said that 据说.called Shen Nong过去分词作ruler的后置定语=who was called Shen Nong2. In this way, one of the worlds favorite drinks was invented.in this way 这样eg. In this way, no ones feelings were hurt.这样一来，人们的感情不至受到伤害。one of+可数名词复数，意思是“.其中之一”3.The tea trade from China to Western countries took place inthe 19th century. take place=happen发生(不用于被动语态)4.tea didnt appear until around 1660, but less than 100 yearslater, it had become the national drink.not.until 知道.才around 大约=abouteg. It happened about 5 oclock in the morning. 这事发生在早晨约莫五点钟的时候。The journey will take around ten days. 这次旅行大约要用十天时间。less than 不到，小于，少于The lightest weighs less than 50 kilograms.最轻的不到50千克。more than 不止、超过、胜过、多于、以上、很eg.He is more than a friend to me. 他对我不止是一个朋友。Step7: Grammar Focus: Passive voice of present tense:1. 语态（Voice）1) 主动语态:当主语为动作的执行者时,谓语的形式为主动语态2) 被动语态:当主语为动作的承受者时,谓语要用被动语态eg. My grandfather bought the piano.The piano was bought by my grandfather.2. 一般过去时被动语态的构成“主语+was/were及物动词的过去分词”构成。 eg. It was invented in 1985.Exercises on PPT16Step 8: Rewrite the sentences using the passive voice. 1. They sold the fridge at a low price. The fridge was sold at a low price. 2. Somebody stole my camera from my hotel room. _ 3. Where did you take these photos? _ 4. Our parents advised us not to go out alone. _ 5. Different writers translated the book into different languages. _Step9: Complete the sentences with the correct forms of the verbs in the box.1. You_ to the party last night, werent you? Why didnt you go? 2. The earthquake_ all of a sudden, but luckily the villagers to_ a safe place. 3. The door_ when we arrived, so we_ the bell. 4. The students_ not to eat or drink in class. But Ruby_the rule when she started eating a biscuit in science class. 5. The cookies_ by the hungry kids in less than 20 minutes. Then they_ them.Step 10: Decide whether active or passive forms should be used in these sentences. Write the correct forms in the blanks.The telephone_(invent) by Alexander Graham Bell. He_(born) in 1847. Mr. Bell on the invention of the telephone with Thomas Watson. In 1875, Mr. Bell_ (learn) to send musical notes through an instrument similar to a telephone. Finally, the telephone_ (invent) in 1876. The first sentence that_ (say) on the telephone by Alexander was “Mr. Watson, come here; I want to see you.” Today the telephone_ (use) around the world.Step 11:Summary1. the passive voice of past tense eg. It was invented in 1893.2.new 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 Step 11: Homework Homework 1. Finish Self Check2. Remember the new words, and we are going to have a dictation tomorrow.七、Board DesignUnit 6 When was it invented?Section A，3a-4c1. the passive voice of past tense eg. It was invented in 1893.2.new 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