最新人教新目标版英语九年级上册Unit6 When was it invented第1课时公开课课件

发布于:2021-08-02 13:31:29

Unit 6 When was it invented ? Period One (Section A 1a-2c) four 情境引入 great inventions: compass paper making gun powder printing 情境引入 1976 1927 1971 1885 1876 When was the _____ invented ? It was invented in ________ . 情境引入 light bulb 1879 Edison 1. When ____ the light bulb ____ ? It was invented in ______. 2. Who _____ it _______ by ? It ______ ______ by Edison. 3. What is it ______ for ? It is used for ____ people _____ in the dark. 情境引入 The keys: 1.was ; invented; 1879. 2.was ; invented; was; invented. 3.used; helping; see . 情境引入 Benz. car 1885 Practice: When was the car invented ? It was invented in 1885. Who was it invented by ? It was invented by Benz. What’s it used for ? It’s used for traveling. A : What is the computer used for ? B :It is used for studying What is the calculator used for ? It is used for calculating . 情境引入 Bell 1876 Beld 1927 Kelif 1976 Fen.Noyma 1971 情境引入 Practice Answer the questions below: When was it invented ? Who was it invented by ? What’s it used for ? Listen and match the inventions with the dates. 1876_______ 1885 _______ 1927 _______ 1971 _______ 1976 _______ inventions high heels adjustable 可调 整的 adjustable heels inventions scoop ice cream scoop heated ice cream scoop inventions slippers a battery battery-operated slippers batteries Listening 1.Listen to the tape and finish the task 2a and 2b of page 42. 2.Make conversations using the informations in 2b. 情境引入 The Passive Voice: 被动语态的用法: 被动语态 1. 不知道动作的执行者时,常用被动语态。 eg: 1) My bike was stolen yesterday. 2) This car is made in America. 2. 不必要说出动作的执行者时,常用被动语态。 eg: Rome was not built in a day . 3. 为了突出强调动作的承受者时,常用被动语态。 eg:Thousands of beaches are polluted. 情境引入 The Passive Voice: 被动语态 主动语态变被动语态的步骤: 1.把主动语态句中的动作的承受着变成被动语态句中的主 语。 2.把动词改为被动形式,即“be+动词的过去分词”。注意 be动词要按新的主语的人称和数的变化而改变。时态要和 原来的主动语态时态保持一致。 3.原主动语态句中的主语,如果需要,就放在by的后面, 要变成它相对应的宾格形式,如果不需要,可以省略。其 它成分不变。 The Passive Voice: 被动语态 被动语态的构成: 主语 + be + 动词的.过去分词 常见的几种时态的被动语态的句型。 一般现在时:主语 + be ( am / is / are ) +动词的 过 去分词 + ------. 一般过去时:主语 + was / were + 动词的过去分词 + ------. 一般将来时:主语 + will / shall + be +动词的 过去 分词 + ------. 含情态动词时其构成:主语+情态动词 + be + 动词 的.过去分词. Exercises 用所给单词的正确形式填空: 1)When was the telephone _____ (invent)? 2)The computer can ____ (help) us do math problems. 3)In those day, the woman couldn't ____(afford) a TV because they were really expensive. 4)A friend of ____ (I) came to see me last week. 5)I think you need to ___ (take) a history cla

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