【成考英語】2009年成人高考英語語法被動語態(tài)三:現(xiàn)在進(jìn)行時的被動語態(tài)

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三、現(xiàn)在進(jìn)行時的被動語態(tài)
    承受者+be{is/am/are being(現(xiàn)在分詞)done by+執(zhí)行者 (不明確可省略)。
    E.g. 主動: He is writing his composition.
    被動:His composition is being written by him.
    Note: write/wrote/wtitten