九年级英语Whenwasitinvented课件4.ppt

Unit 9Language Goals:Grammar Focus:computerTV197619271b1bListen and match the inventions with the dates.abedc18761885192719711976dabec1c1c1c1cWhat are they?battery-operated slippersWhat are they used for?seeing in the darkWho were they invented by?Julie ThompsonWhat are they?Shoes with adjustable heelsWhat are they used for?Changing the style of the shoesWho were they invented by?Jayce Coziar and Jamie EllsworthWhat is this?heated ice cream scoopWhat is it used for?scooping really cold ice creamWho was it invented by?Chelsea Lanmon2a2aListen and number the inventions inthe order that you hear.312InventionWho was it/were they invented by?What is is/are they used for?shoes with adjustable heelsChelsea Lanmonscooping really cold ice creambattery-operated slippers Jayce Coziar and Jamie Ellsworth seeing in the darkheated ice cream scoopJulie Thompsomchanging the style of the shoesListen again. Match the inventions Listen again. Match the inventions with their inventors and uses.with their inventors and uses.2b2bThe passive voice. 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.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般过去时am (is, are) + donewas (were) + doneThe passive voice.1.把原主动句中的宾语转换为被动语态的主语.2.把动词改为被动形式,即 “be + 过去分词” . 注意 be动词要按新的主语的人称和数进行变化,时态要和原来的主动语态的时态保持一致.3. 原来主动语态句中的主语,如果需要,就放在by后面以它的宾格形式出现. 如果没有必要就可以省略.其他的成分 (定语,状语) 不变, 句式也不能变.The passive voice.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.Bellinvented the telephone in 1876.wasbySurf the Internet ,and find out more inventions. Introduce them to your classmates,using It was invented by _.It was invented in_.It is used for_.