初中英语被动语态讲解.ppt

1、被动语态,Passive voice,被动语态基本用法 当句子的主语是动作的执行者时，谓语的形式是主动语态。当句子的主语是动作的承受者时，谓语要用被动语态。被动语态由助动词be+过去分词构成，时态通过be表现出来。,be + Vp.p(动词的过去分词） 1)be 动词可以随时态人称的变化而变化 am/ is / are + V(过去分词） was/ were+ V(过去分词） will be + V(过去分词） 情态动词+ be + V (过去分词）,1.规则动词的过去分词：,1)一般情况在动词原形后加-ed,watch-watched,2)以不发音e结尾的加-d,practice-pract

2、iced,3)以辅音加y结尾的，去y变i加-ed,study-studied,4)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-ed,stop-stopped,2.不规则动词的过去分词：,am,is,are,been,have,has,had,do,done,write,written,go,gone,He plants trees in spring.,主,谓,宾(受动者),Trees,are planted,by,him,改为被动语态,in spring.,主动语态变被动语态口诀： 宾语提前主语变， 原主变宾by后见， 时态人称be关键。,His brother was

3、hes bowls every day.,主,谓,宾(受动者),Bowls,are washed,by,his brother,every day.,Fill in the blank with the right form of the verb given. 1.Their house _ (paint) last week. 2.Visitors _ (request) not to take photos in this museum. 3.This terrible disease _ (spread) in 2003. 4.Students _ (tell) to work har

4、d everyday.,was painted,are requested,are told,was spreaded,1.They make shoes in that factory. 主语+及物动词+宾语,Shoes are made (by them) in that factory. 一般现在时： S(主语）+am/is /are +过去分词,变为被动语态,2. They bought ten computers last term,Ten computers were bought (by them) last term. 一般过去时：S+was/were +过去分词,3Amy c

5、an take good care of Gina ,Gina can be taken good care of by Amy. 情态动词： S+ can/may/must/should + be+过去分词,1)Teenagers should _ (allow) to go out at night. 2) The room must _ (clean) every day. ( ) The flowers _ every day,or theyll die. A must water B can be watered C should water D must be watered,be

6、 allowed,be cleaned,D,各种时态的被动语态构成 1）一般现在时：You are invited to do this. 2）一般过去时：The story was told by her. 3）一般将来时：The problem will be discussed tomorrow.,看一看 想一想,4)情态动词：The rubbish can be put into the dustbin over there.,各种时态的被动语态构成,一般现在时： 一般过去时： 情态动词： 一般将来时： 现在进行时： 现在完成时： 过去进行时：,S+am/is /are +P.P S+

7、was/were +P.P. S+ can/may/must/should + be+ P.P. S+ will+be+ P.P. S+ am/is/are + being + P.P. S+ have/has + been+ P.P. S+ was/were+being+ P.P.,何时使用被动语态呢？ 一、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： Football is played all over the world 二、不易找到或根本就不可能找到动作的执行者时。例如： My bike was stolen我的自行车被盗了。,三、汉语中含有“据说”、“据悉”、“有人说

8、”、“大家说”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. 众所周知 It is well known that 据推测说 It is supposed that ,四、汉语中含有“被”、“由”等词时。 例如： Tina is asked to come by Paul Tina是被Paul叫来的。 五、某些句子习惯上用被动语态。例如： He was born in October，1989,1.People use knives for cutting things. Knives _ _ for cutting things. 2.The students clean the windows of their classroom twice a month. The windows of their classroom_ _ twice a month.,EXERCISES,(变被动语态）,are used,are clean,3.I found the ticket on th