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Unit 9 Section B 1a-2clisteninglistening Language Goals:Talk about the history of inventions.Grammar Focus:The passive voice.1a1avacabularyvacabularygrammargrammarhomehomepairworkpairworkexerciseexerciseThe 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英语中动词有主动语态和被动语态两种语态.主动语主动语态表示主语是动作的执行者态表示主语是动作的执行者,被动语态表示主语是动作的被动语态表示主语是动作的承受者承受者,在被动语态中动作的执行者有时用在被动语态中动作的执行者有时用by短语表示短语表示出来出来.被动语态的被动语态的构成构成:助动词助动词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.被动语态被动语态被动语态的用法被动语态的用法:1.不知动作执行者时不知动作执行者时,常用被动语态常用被动语态.eg.My bike was stolen yesterday.This car is made in American.2.不必要说出动作执行者时不必要说出动作执行者时,常用常用.eg.Rome was not built in a day.3.为了突出强调动作的承受者时为了突出强调动作的承受者时,常用被动语态常用被动语态.eg.Thousands of beaches are polluted(污染污染).The 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.把原主动句中的宾语转换为被动语态的主语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把动词改为被动形式,即即“be+过去分词过去分词”.注意注意 be动词要按新的主语的人称和数进行变化动词要按新的主语的人称和数进行变化,时态要和原来时态要和原来的主动语态的时态保持一致的主动语态的时态保持一致.3.原来主动语态句中的主语原来主动语态句中的主语,如果需要如果需要,就放在就放在by后面后面以它的宾格形式出现以它的宾格形式出现.如果没有必要就可以省略如果没有必要就可以省略.其他的其他的成分成分(定语定语,状语状语)不变不变,句式也不能变句式也不能变.The passive voice.被动语态被动语态主动语态变被动语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.主语主语谓语动词过去时谓语动词过去时宾语宾语时间状语时间状语主语主语谓语动词的过去分词谓语动词的过去分词宾语宾语时间状语时间状语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.wasbybeusedfordoingsomething用来做用来做wasinvented被发明被发明scoop用勺舀用勺舀adjustable可调整的可调整的heel后跟后跟battery电池电池operate操作操作,作业作业battery-operated电池供电的电池供电的heat加热加热,使变使变热热slipper拖鞋拖鞋lightbulb电灯泡电灯泡microwaveoven微波炉微波炉crispy脆的脆的salty咸的咸的sour酸的酸的bymistake错误地错误地chef厨师厨师soursweetsweetsweetcrispysaltyListenandcircle“T”(fortrue)or“F”(forfalse).Listenandcircle“T”(fortrue)or“F”(forfalse).1.The potato chips were invented by mistake.2.They were invented in 1863.3.The customer thought the potatoes werent thin enough.4.The customer said they werent salty enough.5.George wanted to make the customer happy.6.The customer was happy in the end.TFTFTFTFTFTFTFTFTFTFTFTFThe history of chips that potato chips were invented by mistake?Chips by a chef called George Crum.They were invented in .George Crum cooked them for a long time until they .And he sprinkled lots of salt on them so they were .Did you knowwereinvented1853were crispyreally saltyListeningmaterial(听力原文听力原文)A:Hey,didyouknowthatpotatochipswereinventedbymistake?B:Really?Whatdoyoumean?A:Well,hereonthebagitsaysthattheywereinventedbyachefcalledGeorgeCrum.B:Whenwasthat?A:Oh,itwasbackin1853.B:So,whywasitanaccident?A:Well,onedayacustomerintherestaurantwhereGeorgeworkedsentbackhisplateoffriedpotatoesbecausehesaidtheywerecuttoothick.B:Sowhathappened?A:Well,Georgewasinabadmood,sohecutthepotatoesreally,really thin,andhecookedthemforalongtimeuntiltheywerecrispy.Andhesprinkledlotsofsaltonthemsotheywerereallysalty.Hethoughtthecustomerwouldhatethem.B:And?A:Andthecustomerlovedthemandaskedformore.Hetoldtheothercustomers aboutthem,andsoon everyonewasorderingthinly-sliced,crispy,saltypotatochips.B:Andwerestilleatingthemtoday.Whatacoolstory!A:Yeah.SectionB一、完成句子。一、完成句子。1我错拿了你的英汉字典。我错拿了你的英汉字典。ItookyourEnglish-Chinesedictionary_.2这道数学题我做起来不够容易。这道数学题我做起来不够容易。Themathproblemis_formeto_.3我妈妈不喜欢任何酸的水果。我妈妈不喜欢任何酸的水果。Mymotherdoesntlike_.4最后篮球就这样被发明了。最后篮球就这样被发明了。_,basketball_inthisway.5顾客们说这盘薯片太咸了。顾客们说这盘薯片太咸了。Thecustomersaidthattheplateofpotato_.二、根据课文内容，翻译下列短语或词组。二、根据课文内容，翻译下列短语或词组。1世界上最受欢迎的饮料世界上最受欢迎的饮料2偶然地偶然地3西西方世界方世界4直到直到才才5在那之前三千多年在那之前三千多年6根据根据7一个古老的传一个古老的传8煮开水煮开水9附近的一个附近的一个灌木丛灌木丛10发出令人愉悦的味道发出令人愉悦的味道11用这种方法用这种方法12世上最受欢迎的饮料之一世上最受欢迎的饮料之一
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