初中英语被动语态讲解原版(5页).doc
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1、-初中英语被动语态讲解原版-第 5 页初中英语被动语态讲解原版一、被动语态的构成形式1. 被动语态的基本时态变化被动语态通常为十种时态的被动形式, 被动语态由be过去分词构成,be随时态的变化而变化。以do为例,各种时态的被动语态形式为: 1) am/is/are +done (过去分词) 一般现在时例Visitors are requested not to touch the exhibits.2) has /have been done 现在完成时例All the preparations for the task have been completed, and were ready
2、to start.3) am/is /are being done 现在进行时例A new cinema is being built here4) was/were done 一般过去时例I was given ten minutes to decide whether I should reject the offer.5) had been done 过去完成时例 By the end of last year, another new gymnasium had been completed in Beijing.少儿英语口语的提高,如果方法对还是很快的,最好的方法就是让他沉浸在一个英
3、语的环境中,现在最多人用的类似UIABC 这样的外教一对一教学平台,在一对一的教学中建立一个纯正的说英语环境,15元/节的价格,也是还算比较经济的。6) was/were being done 过去进行时例A meeting was being held when I was there.7) shall/will be done 一般将来时例Hundreds of jobs will be lost if the factory closes.8) should/would be done 过去将来时例The news would be sent to the soldiers mother
4、 as soon as it arrived.9) shall/will have been done 将来完成时(少用)例The project will have been completed before July.2. 被动语态的特殊结构形式1)带情态动词的被动结构。其形式为:情态动词be过去分词。例The baby should be taken good care of by the baby-sitter.2) 有些动词可以有两个宾语,在用于被动结构时,可以把主动结构中的一个宾语变为主语,另一宾语仍然保留在谓语后面。通常变为主语的是间接宾语。例His mother gave hi
5、m a present for his birthday. 可改为 He was given a present by his mother for his birthday.3) 当“动词+宾语+宾语补足语”结构变为被动语态时,将宾语变为被动结构中的主语,其余不动。例Someone caught the boy smoking a cigarette. 可改为The boy was caught smoking a cigarette.4)在使役动词have, make, get以及感官动词see, watch, notice, hear, feel, observe等后面不定式作宾语补语时
6、,在主动结构中不定式to要省略,但变为被动结构时,要加to。例Someone saw a stranger walk into the building. 可改为A stranger was seen to walk into the building.5) 有些相当于及物动词的动词词组,如“动词介词”,“动词副词”等,也可以用于被动结构,但要把它们看作一个整体,不能分开。其中的介词或副词也不能省略。例The meeting is to be put off till Friday.3. 非谓语动词的被动语态v.+ing 形式及不定式 to do 也有被动语态(一般时态和完成时态) 。例I d
7、ont like being laughed at in the public.二、 如何使用被动语态学习被动语态时,不仅要知道被动语态的各种语法结构,还要知道在哪些情况中使用被动语态。1. 讲话者不知道动作的执行者或不必说出动作的执行者 (这时可省 by 短语)。例 My bike was stolen last night.2. 借助被动的动作突出动作的执行者。例 I was given ten minutes to decide whether I should accept the offer.3. 为了更好地安排句子。例The well-known person got on the
8、 bus and was immediately recognized by people. (一个主语就够了)三、 It is said that+从句及其他类似句型一些表示“据说”或“相信”的动词如believe, consider, expect, report, say, suppose, think等可以用于句型“Itbe过去分词that从句”或“主语be过去分词to do sth.”。有:It is said that 据说,It is reported that据报道,It is believed that大家相信,It is hoped that大家希望,It is well
9、known that众所周知,It is thought that大家认为,It is suggested that据建议。例It is said that the boy has passed the national exam. (The boy is said to have passed the national exam. )四、谓语动词的主动形式表示被动意义1.英语中有很多动词如 break,catch,clean,drive,lock,open,sell,read,write,wash等,当它们被用作不及物动词来描述主语特征时,常用其主动形式 表达被动意义,主语通常是物。例 Th
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