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1、Unit 9 When was it invented？The first period ( Section A 1a,1c,2c- Grammar Focus )I. Learning Aims and Demands 1. Knowledge objects Key Vocabulary Key phrases and sentences Target language. 2. Ability objects： Can use the following skillfully:-when was the car invented ? - It was invented in - - Who
2、 was it invented by? - It was invented by- - What are they used for ? - They are used for -Communicative competence ：Practise their own conversations usingwas/were+ p.p.3. Moral objectLearn about some important inventions that have changed the world a lot. II. Learning Key Points Adverbial clauses w
3、ith when , while Learn past progressiveIII. Learning Difficulties 1Adverbial clauses with when , while . 2Learn past progressive . IV Learning Methods Speaking methods. Cooperating method. Inductive method. Pairwork. V. 预习A: 预习内容 ( Section A 1a,1c,2c- Grammar Focus )B. 写出下列动词的过去式和过去分词：cook_ _ visit_
4、 _invite_ _use_ _invent_ _ stop_ _write_ _ do_ _ eat_ _ drive_ _ grow_ _ close_ _C： 被动语态The Passive VoiceVI学生展示1 小组内自纠，完善课前预习 2. 小组展示预习内容 3个性表演。VII. Learning Procedures Step 1 Leading in 1. T: We all know there are many inventions changed our lives. Today lets talk about some inventions. Teacher ask
5、 Ss：When was/were invented? Who was invented by? What wasused for? Teacher lead Ss to answer.2. Remember them by practicing them in pairs.一、预习交流 Task1: Talk about the following inventions 1.Pairwork: A: When was the car invented? B: It was invented inA: What are they used for ? B: They are used for.
6、 Choose the four inventions of these and ask students to guess when each one was invented.For example, calculator, telephone, TV and computer.Step 2 .Talk about other four inventions like this . Work in pairs to make their own conversations about the inventions.Step 3 Have several different students
7、 guess and write the dates on the board. Ask the class to repeat the questions and answers.Step 4 Teachers advice A. Grammar : The Passive Voice 1. 语态及语态的用法: 当我们不知道谁是动作的执行者，或者没有必要指出谁是动作的执行者。或者只需要强调动作的承受着时，要用被动语态。2. 被动语态的构成: 被动语态由“助动词be+及物动词的过去分词”构成,观察下列句子:1)Trees are planted by people every spring.
8、2)The telephone was invented in 1876.3)English is spoken in Canada. 4)Teenagers should be allowed to choose their own clothes. 3. 一般现在时的被动语态：主语+助动词（is,am,are ）+及物动词的过去分词（+ by+宾语） 4. 一般过去时的被动语态主语+助动词（was, were ）+及物动词的过去分词（+ by+宾语）: 5. 主动语态变被动语态的方法 We speak English.- English is spoken by us. Bill inve
9、nted the telephone in 1876.- The telephone was invented by Bill in 1876.B. Words, phrases and sentences1. invent , find , discover的区别 invent“发明”，把世界上本来没有的东西，经过思考、实验，最后得以创造出来并应用于生活中。而find/discover作“发现”讲，指世界上已存在的东西，经过努力而找到，发现此物品。2. operate v.- operator n.-operation n. Operate a car/ machine operate on
10、 / upon sb.或身上某部位3. I think the telephone was invented before the car. think的用法小结 a) think + that-clause You cant think how glad I am. 你想象不出我有多高兴。 b) think it + adj. / n. +( for sb. )to do sth. 认为做某事是。 I think it best to refuse. 我认为最好还是拒绝。 c) What do you think of.? = How do you like.? d) think ( bel
11、ieve , suppose , expect , imagine ) 的否定前移 I dont think it will rain. I dont suppose he knows you 这类句子变成反义疑问句时，反义疑问句部分要与从句保持一致， I dont think it will rain, will it ? I dont suppose he knows you, does he ? It think he will come back in an hour, wont he ?e) I think so 的否定式是 I dont think so. 而I hope so的否
12、定式是 I hope not.4. Attention: A: Who were the shoes with adjustable heels invented? B：They were invented by. A: What are they used for ? B: They are used forA: When was the car invented? B: It was invented inStep 6 .Grammar Focus Review the grammar box by asking some students to read the sentences对应训
13、练： 对划线部分提问？1.It was invented in 1885. 2.They were invented by Juilie Thompson.3. They are used for seeing in the dark.Step 7:Feedback 1.The car in 1885.(A. invented B. were invented C. invents D. was invented )2.Battery-operated slippers seeing in the dark. A. used of B. were used for C. are used fo
14、r D. are used on3.Who it invented ? (A. were of B. was by C. is for D. was form )4.Theyre used for really cold ice cream. A. scoopping B. scoopped C .scoop D. scooping5.Trees by people in spring every year.(A. planted B. were planted C. are planted ) Step 11. 课后小结 编写者： 耿淑云Unit 9 When was it invented？The second pe
