分詞做狀語時(shí)，前面可用連詞或介詞。
    例如：
    After eating my dinner quickly，I went to see Jim off。我趕快吃過晚飯就去給吉姆送行。
    Though built before the Second World War，the engine is still in good condition。盡管是在二戰(zhàn)以前建的，這引擎仍然處于良好狀態(tài)。
    Unless paying by credit card，please pay in cash。如果不用信用卡付款，請(qǐng)用現(xiàn)金付。
    Tom will never do this unless compelled。湯姆永遠(yuǎn)也不會(huì)干這種事，除非被逼無奈。
    She’s been quite different since coming back from America。從美國回來后，她大變了。
    (二)用法
    1.作定語。作定語的分詞通常放在被修飾的名詞之前。如果被修飾的詞是something，anything，everything，nothing等，則分詞放在這些詞之后。分詞短語通常放在被修飾的名詞之后。
    例如：
    This is an interesting book。(=This is a book。It is interesting。)這是一本有趣的書。
    There is something interesting in the news。(=There is something in the news。 It is interesting。)消息中有些有趣的事。
    The man sitting by the window is our math teacher。(=The man who is sitting by the window is our math teacher。)靠窗戶坐著的那個(gè)人是我們的數(shù)學(xué)老師
    The machine run by the old worker is made in Shanghai。(=The machine that is run by the old worker is made in Shanghai。)那位老工人開的機(jī)器是上海造的。
    Most of students singing were girls。(=Most of the students who were singing…)唱歌的學(xué)生多數(shù)是女生。
    Many of the villagers questioned refused to answer。(=Many of the villagers who were questioned…)被問的許多村里人都拒絕。
    注意：(1)分詞作定語與動(dòng)名詞作定語的區(qū)別：
    分詞和它所修飾的名詞有邏輯上的主、謂關(guān)系。動(dòng)名詞則沒有這種關(guān)系，而表示它所修飾的詞的用途或有關(guān)動(dòng)作。