教育专题：九年级unit9.ppt

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1、Unit 9When was it invented?Section AInventions 发明Talk about the history of inventions.The passive voice.Language Goals:Grammar Focus:1c1bListen and match the inventions Listen and match the inventions with the dates.with the dates.abedc18761885192719711976dabec1cWhen was the telephone invented?I thi

2、nk it was invented in 1876.obe invented 被发明obe invented in 于哪一年发明18761885192719711976 When was the car invented?It was invented in 1885.battery-operated slippersheated ice cream scoopshoes with adjustable heels电池供电电池供电的拖鞋的拖鞋加热的加热的冰激凌勺冰激凌勺可调节可调节后跟的鞋后跟的鞋2aListen and number the inventions inthe order t

3、hat you hear.3122b Listen again.Match the inventions with their inventors and uses.Inventionshoes with adjustable heelsbattery-operated slippersheated ice cream scoopWho was it/were they invented by?Chelsea LanmonJayce Coziar and Jamie EllsworthJulie ThompsonWhat is it/are they used for?scooping rea

4、lly cold ice creamseeing in the darkchanging the style of the shoes2bWho was it/were they invented by?It was/They were invented by Chelsea Lanmon.be used for doing sth.被用于be used to do sth.eg The kind of machine is used for cutting paper.The kind of machine is used to cut paper.A:When was the teleph

5、one invented?B:It was invented in1876.A :Who was it invented by?B:It was invented by Bell.calculator1985Henry Ford197118851907WrightCrayBill HewlettThe passive voice.被动语态被动语态 英语中动词有主动语态和被动语态两种语态.主动语态表示主语是动作的执行者,被动语态表示主语是动作的承受者,在被动语态中动作的执行者有时用by短语表示出来.被动语态的被动语态的构成构成:助动词be+(及物动词的)过去分词 一般现在时一般现在时一般过去时一

6、般过去时am (is,are)+donewas(were)+doneThe passive voice.被动语态被动语态被动语态的用法被动语态的用法:1.不知动作执行者时,常用被动语态.eg.My bike was stolen yesterday.This car is made in American.2.不必要说出动作执行者时,常用.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(污染).The passive voice.被动语态被动语态主动语态变被动语

7、态的结构图主动语态变被动语态的结构图:Bell invented the telephone in 1876.The telephone was invented by Bell in 1876.主语谓语动词过去时宾语时间状语主语谓语动词的过去分词宾语时间状语The passive voice.被动语态被动语态主动语态改被动语态主动语态改被动语态:Bellinvented the telephone in 1876.wasbyThe passive voice.被动语态被动语态主动语态变为被动语态的步骤主动语态变为被动语态的步骤:1.宾语转换为主语.2.把动词改为被动形式,即“be+过去分词”

8、（注意：句式，时态与原句保持一致）3.如果需要,原主语就放在by后面练习一 请把下列的主动句变为被动句（注意时态的一致）1 He wrote an article last week.An article was written by him last week.2 The people make history.History is made by people.3 Do people use Chinese only in China?Is Chinese used by people only in China?4 They didnt visit the city two years ago.The city wasnt visited by them two years ago.Review key phrasesobe invented be invented in be invented byobe used be used for doing be used to doReview被动语态被动语态主动语态变为被动语态的步骤主动语态变为被动语态的步骤:1.宾语转换为主语.2.把动词改为被动形式,即“be+过去分词”（注意：句式，时态与原句保持一致）3.如果需要,原主语就放在by后面