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1、Section A (3a-4c),Unit 6 When was it invented?,学习目标,Key words 民族的,e.g. Li Na, without doubt, is the best tennis player in China. 毫无疑问，李娜是中国最优秀的网球运动员。,nation (国家) + al national,e.g. The group of dancers wore national dress. 那群跳舞演员穿着民族服装。,7. without doubt 毫无疑问；的确,8. take place 发生；出现, 是不及物动词，不能用于被动语态；
2、常指事先安排或事发有因的事情。 e.g. Her sisters marriage took place at 8:00 today. 她姐姐的婚礼今天八点举行。, 辨析：happen则常指偶然发生的事情 e.g. I happened to see Peter on my way to the museum. 在去博物馆的路上我碰巧遇到皮特。,9. It is said that a Chinese ruler called Shen Nong was the first to discover tea as a drink. 据说有一位叫作神农的中国统治者最早发现 了茶可以饮用。,It i
3、s said that是个常见句式，表示“据 说”, that后面接完整的句子。 e.g. It is said that thirteen is an unlucky number in many Western countries. 据说在许多西方国家13是个不吉利的数字。,本单元还有一个类似的句式: It is believed that，意思是“人们认为”, 其后同样接完整的句子。 e.g. It is believed that tea was brought to Korea and Japan during the 6th and 7th centuries. 人们认为，茶在六至
4、七世纪传到了 朝鲜和日本。,10.茶经是我国唐代一部有关茶叶 及品茶的专著，作者陆羽。该书共 分三卷十节，全面叙述了茶叶生产 的历史，源流，生产技术以及饮茶 技艺和茶道原理，享有 “茶叶百科 全书”之美誉。,根据课本内容，完成下列句子。,1. 拉链是什么时候被发明的？ _ _ the zipper _? 2. 它于1893年被发明。 It _ _ in 1893.,Grammar Focus,was invented,When was invented,3. 它是由谁发明的？ _ _ it invented _? 4. 它是由惠特科姆贾得森发明的。 It _ _ _ Whitcomb Juds
5、on. 5. 茶叶什么时候被带到朝鲜去的？ _ _ tea _ to Korea? 6. 是在六到七世纪之间被带到朝鲜。 It _ _ to Korea _the 6th and 7th centuries.,was invented by,When was brought,was brought during,Who was by,7. 热冰淇淋勺用来做什么？ What _ the hot ice-cream scoop _ _? 8. 它用来挖很冷的冰淇淋。 Its _ _ _ really cold ice-cream.,used for serving,is used for,9. 贝
6、尔于1876年发明了电话机。 Alexander Graham Bell _ the telephone in 1876. 10. 电话机在1876年被贝尔所发明。 The telephone _ _ _ Alexander Graham Bell in 1876.,invented,was invented by,Grammar,英语有两种语态：主动语态和被动语态。主动语态表示主语是动作的执行者，而被动语态则表示主语是动作的承受者。如： We cleaned the classroom yesterday. 我们昨天打扫了教室。 (主动语态，主语we是clean这一动作的执行者),The c
7、lassroom was cleaned yesterday. 教室昨天被打扫。 (被动语态，主语the classroom是clean这一动作的承受者),一、一般过去时被动语态 一般过去时被动语态的结构为“主语+ was /were +及物动词的过去分词(+by+动作的执行者).”。如： Trees were planted last spring. 去年春天种了树。,1. 肯定句： 主语+was / were+及物动词的过去分词+其他.,e.g. Paper was invented by Chinese people two thousand years ago. 纸是中国人在二千多年前
8、发明的。,2. 否定句： 主语+ was/were not+及物动词的过 去分词+其他.,e.g. Women were not allowed to take part in the games at first. 开始妇女不允许参加奥运会。,e.g. Was this picture drawn by your sister? 这幅画是画的吗？,3. 一般疑问句： Was/Were +主语 +及物动词的过去分 词+其他?,二、被动语态的用法： 1. 不知道谁是动作的执行者，或没有必要指出谁是动作的执行者。 e.g. English is spoken all over the world.
9、 全世界都在说英语。 2. 需要突出或强调动作的承受者。 e.g. This dictionary is used by most students. 这本字典是大多数学生在用的。,1. 有些短语动词相当于及物动词，变为被动句时介词或副词不能去掉。,e.g. They put off the meeting because of the weather. The meeting was put off because of the weather. 会议因天气的缘故被推迟了。,三、主动语态变被动语态应注意的问题,2. 含有双宾语的主动句变为被动句时， 通常把指“人”的间接宾语变为主语， 指“物
10、”的直接宾语保留不变；如果把 指“物”的直接宾语变为主语，则在间接 语前加to或for。,e.g. My aunt gave me an e-dictionary yesterday. I was given an e-dictionary yesterday. An e-dictionary was given to me yesterday.,3. 主动句中感官动词see / hear / watch / feel等和使役动词make / let / have等后跟省略to的动词不定式，变为被动语态时应加上不定式符号to。,e.g. I saw a heavy man enter the
11、house. A heavy man was seen to enter the house.,4. 系动词、不及物动词或某些短语动词（happen, take place, come true, fall asleep）没有被动语态。,e.g. What happened to Mr. Brown? 布朗先生发生了什么事？,将下列句子变为被动语态。,1. He chose six story books the other day. Six story books _ _ by him the other day. 2. Uncle Lee gave Jack a large cake fo
12、r he painted the wall wonderfully. Jack _ _ a large cake for he painted the wall wonderfully.,练一练,was given,were chosen,Exercise,3. A mouse ate half of the cake last night. Half of the cake _ _ by a mouse last night.,was eaten,将下列句子变为主动语态。,4. Were these machines invented by Edison? _ Edison _ these
13、machines?,Did invent,5. The post card was sent to Linda by Paul. Paul _ the post card _ Linda. 6. America was discovered by Columbus. Columbus _ America.,sent to,discovered,对划线部分提问,7. Shoes with lights were used for seeing in the dark. _ _ shoes with lights _ for? 8. Paper was invented in China almo
14、st a thousand years ago. _ _ paper _ in China?,used,What were,When was invented,4a,Practice,Rewrite the sentences using the passive voice.,【点拨】原句为一般过去时态，原句的谓语动词为sold，宾语为the fridge；改为被动语态时，应将the fridge作主语，谓语动词用was sold的形式。,1. They sold the fridge at a low price.,The fridge was sold at a low price.,【点
15、拨】分析原句的句子结构可知，stole是谓语动词，my camera是句子的宾语；改为被动语态句时，应将my camera作句子主语，谓语动词用was stolen的形式。,2. Somebody stole my camera from my hotel room. _ _,My camera was stolen 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 l
