unit9WhenwasitinventeditSectionA

1、unit 9 unit 9 when was it invented?when was it invented?section alets review the new words发明发明 n.v.inventorinventioncalculatorn.计算器计算器scoopn./v. 勺子，用勺子舀勺子，用勺子舀adjustable heels可调整的鞋跟可调整的鞋跟battery n.电池电池pl pl. batteriesoperatev.操作，手术操作，手术n. operationslippern.拖鞋拖鞋heatv.加热加热light bulb microwave oven the

2、 _ _ many _ all his life.inventor inventedinventionsinvent电灯泡电灯泡微波炉微波炉can you tell when they were invented?a: when was the _ invented?b: i think it was invented in _.pairwork (1c:p68)19761885187619271971edison invented the light bulb.the light bulb was invented by edison.who who waswas the light bul

3、b the light bulb invented byinvented by? ?the telephone by bell.was invented who was the telephone inventedwho was the telephone invented by?by?bell invented the telephone._ was invented by _.the carkarl benzwho was the car invented by?who was the car invented by?karl benz invented the car.a: what i

4、s the car used for?b: the car is used for traveling. a: what is the _ used for?b: i think it is used for _.talking with peoplea: what is the used for?b: i think it is used for _. (count)countinga: what is the used for?b: i think it is used for _.(work)workinga: what is the used for?b: i think it is

5、used for _.(ride) ridinga: what is the _ used for?b: it is used for _.counting(count)a: when was invented?b: it was invented ina: who was it invented by?b: it was invented bya: what is the used for?b: the is used for doing 英语动词有两种语态：英语动词有两种语态： 主动语态主动语态 (the active voice) 被动语态被动语态 (the passive voice)

6、a. 主动语态表示主语是动作的主动语态表示主语是动作的执行者执行者。b. 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。we planted the tree.the tree was planted by us.we speak english.主语主语谓语谓语宾语宾语english is spoken by us.主语主语谓语谓语宾语宾语主动语态主动语态被动语态被动语态they cleaned the classroom yesterday. 昨天他们打扫了教室。昨天他们打扫了教室。the classroom was cleaned by them yesterday.昨天

7、教室被他们打扫了。昨天教室被他们打扫了。the passive voice一、语态一、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. 主动语态表示主语是动作的执行者主动语态表示主语是动作的执行者,被动语态表示被动语态表示 主语是动作的承受者主语是动作的承受者,在被动语态中动作在被动语态中动作 的执行者的执行者 有时用有时用by短语表示出来短语表示出来.be + pp( (二二) )被动语态的基本结构被动语态的基本结构: :有各种时态的变化有各种时态的变化1. now english _ by more and more people all over th

8、e word. a. speaks b. is spoken c. was spoken一般现在时的被动语态：一般现在时的被动语态：主语主语+am / is / are + pp2. the lost boy _ at the street corner last night. a. was found b. is found c. was looked for一般过去时的被动语态：一般过去时的被动语态：主语主语+was / were + pp3. more man-made satellites _ in the future. a. will send up b. will be sent

9、 up c. are sent up一般将来时的被动语态：一般将来时的被动语态：主语主语+will + be + ppbe going to + be + pp4. three bridges _ since last year. a. have built b. were built c. have been built现在完成时的被动语态：现在完成时的被动语态：主语主语+have/ has+ been + pp5. flowers _ every day. a. has been watered b. should be watered c. should water含有情态动词的被动语态

10、：含有情态动词的被动语态：情态动词情态动词 + be + pp1.1.规则动词的过去分词：规则动词的过去分词：1)1)一般情况在动词原形后一般情况在动词原形后加加-ed-edwatch-watched2)2)以不发音以不发音e e结尾的加结尾的加-d-dpractice-practiced3)3)以辅音加以辅音加y y结尾的，去结尾的，去y y变变i i加加-ed-edstudy-studied4)4)以重读闭音节结尾，末尾只有一个辅音字母，先双写该以重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加辅音字母，再加-ed-edstop-stopped2.2.不规则动词的过去分词不规则

11、动词的过去分词：amisarewaswerebeenhavehashaddodonewritewrittengogone动词过去分词的变化动词过去分词的变化: (三三)何时使用被动语态？何时使用被动语态？ 1、行为主体不明确，不必说出或者无、行为主体不明确，不必说出或者无法说出动作的执行者时。例如：法说出动作的执行者时。例如： football is played all over the world 2、不易找到或根本就不可能找到动作、不易找到或根本就不可能找到动作的执行者时。例如：的执行者时。例如： my bike was stolen 我的自行车被盗了。我的自行车被盗了。 3、某些句子习

12、惯上用被动语态。、某些句子习惯上用被动语态。例如：例如： he was born in october，19894、汉语中含有、汉语中含有“被被”、“由由”等等词时。例如：词时。例如： tina是被是被paul叫来的。叫来的。 tina is asked to come by paul5、汉语中含有、汉语中含有“据说据说”、“据悉据悉”、“据报道据报道”等时。例如：等时。例如： it is said that one day he climbed to the top of a house and it was reported that her mother died of sars.众所周

13、知众所周知 it is well known that 据推测说据推测说 it is supposed that 四、主动语态变为被动语态的步骤四、主动语态变为被动语态的步骤: they speak english. 主语主语 谓语谓语 宾语宾语english is spoken by them.主语主语 谓语动词的过去分词谓语动词的过去分词 宾语宾语主变被步骤主变被步骤: :1.找宾语找宾语: 即动作的承受者即动作的承受者(改为主语改为主语)he washed his car yesterday. his car3. 判断判断新主语新主语的单复数的单复数:确定确定be动词的单复数动词的单复数

14、. be4. 判断动词的时态判断动词的时态 : 即即be动词的时态动词的时态.2. 修改谓语的语态修改谓语的语态:即即be+原原v.过去分词过去分词 washed5. 修改原句的主语修改原句的主语 :即即by +主语主语(变宾格变宾格). (by them) yesterday.iswas was1.i open the door.the door is opened by me.2.he often helps homeless people.homeless people are often helped by him.3.i handed out some papers just now.some papers were handed out by me just now.主动语态:主语主语是动作的执行者执行者。被动语态:主语主语是动作的承受者承受者。被动语态结构为：(主