主動語態(tài)與被動語態(tài)的轉(zhuǎn)換規(guī)則

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    一、主動語態(tài)和被動語態(tài)概說
    英語的語態(tài)分主動語態(tài)和被動語態(tài),主動語態(tài)表示主語是動作的執(zhí)行者,而被動語態(tài)則表示主語是動作的承受者。被動語態(tài)由“助動詞be+過去分詞”構(gòu)成:
    Everybody likes him. 大家都喜歡他。 (主動語態(tài))
    He is liked by everybody. 他受到大家的喜歡。(被動語態(tài)) 
     
    二、主動語態(tài)變被動語態(tài)的方法
    1. 主動語態(tài)變被動語態(tài)的基本方法
    將主動語態(tài)的賓語變?yōu)楸粍诱Z態(tài)的主語,將主動謂語變?yōu)楸粍又^語(be+過去分詞),將主動語態(tài)的主語變?yōu)閎y短語(在被動句中用作狀語):
    He broke the cup. → The cup was broken by him.
    【注意】若不強(qiáng)調(diào)動詞執(zhí)行者,被動語態(tài)中的by短語通常可以省略:
    He was born in 1986. 他生于1986年。
    What is this flower called? 這種花叫什么花?
    2. 雙賓動詞的被動語態(tài)
    雙賓動詞即指帶雙賓語的動詞,它們在變?yōu)楸粍诱Z態(tài)時(shí),通常是把間接賓語(指人)變?yōu)楸粍诱Z態(tài)的主語,而把直接賓語(指事物)保留下來(稱為保留賓語):
    He answered me that question. → I was answered that question by him.
    有的動詞則通常把直接賓語(指事物)變?yōu)楸粍诱Z態(tài)的主語,而把間接賓語改為介詞to 或for引起的狀語(到底用to還是for,與所搭配的動詞有關(guān)):
    He wrote her a letter. → A letter was written to her. (與動詞write搭配用介詞to)
    She made him a new coat. → A new coat was made for him. (與動詞make搭配用介詞for)
    有時(shí)以上兩種方式均可用:
    He gave her some money. 他給她一些錢。
    → She was given some money. / Some money was given to him.
    He bought her a watch. 他給她買了一塊表。
    → A watch was bought for her. / She was bought a watch. 
     
    3. 被動語態(tài)的時(shí)態(tài)
    被動語態(tài)的時(shí)態(tài)由被動結(jié)構(gòu)“be+過去分詞”中的動詞be來體現(xiàn),其基本結(jié)構(gòu)和用法如下:
     
    ★(1) 一般現(xiàn)在時(shí)的被動語態(tài):am [is, are]+過去分詞
    English is taught in our school. 我們學(xué)校學(xué)英語。
    We are taken good care of at school. 我們在學(xué)校受到很好的照顧。
     
    ★(2) 一般過去時(shí)的被動語態(tài):was [were]+過去分詞
    He was taken to the police station. 他被帶到了警察局。
    The house was built ten years ago. 這座房子是10年前建的。
     
    ★(3) 一般將來時(shí)的被動語態(tài):will be+過去分詞
    A new building will be built here soon. 不久這里將建一棟新樓。
    The meeting will be held at two this afternoon. 會議將于今天下午2點(diǎn)舉行。
    (4) 現(xiàn)在完成時(shí)的被動語態(tài):have [has]been+過去分詞
    All the work has been done now. 所有的工作現(xiàn)在都做好了。
    Have the letters been posted? 信都寄了嗎?
    (5) 過去完成時(shí)的被動語態(tài):had been+過去分詞
    He said the work had been finished. 他說工作已完成了。
    (6) 現(xiàn)在進(jìn)行時(shí)的被動語態(tài):am [is, are] being+過去分詞
    My watch is being repaired by him. 我的表正在由他修理。
    The plan is now being discussed. 計(jì)劃現(xiàn)在正在討論。
    (7) 過去進(jìn)行時(shí)的被動語態(tài):was [were] being+過去分詞
    He said that the man was being operated on. 他說那個(gè)人正在動手術(shù)。
    He told me that a new station was being built. 他說正在修建一個(gè)新車站。
    (8) 過去將來時(shí)的被動語態(tài):would be+過去分詞
    He said that the meeting would be held next week. 他說會議將于下周舉于。
     
    ★4. 含有情態(tài)動詞的被動形式
    若主動語態(tài)中謂語含有情態(tài)動詞,在相應(yīng)的被動語態(tài)中通常應(yīng)保留該情態(tài)動詞,其結(jié)構(gòu)為“情態(tài)動詞+be+過去分詞”:
    Everyone must know this. →This must be known by everyone.
    請看以下帶情態(tài)動詞被動句實(shí)例:
    This can’t be done in a short time. 這不是短期內(nèi)可以完成的。
    Can this be done by machine? 這可以由機(jī)器來做嗎?
    The work must be done at once. 這工作必須馬上做了。