46. “if at all”是一個(gè)由“if”引起的主謂結(jié)構(gòu)不完整的短句結(jié)為“即將……”，“即使……”等。
    I can see only with great difficulty， if at all.
    47. 由there引起的句型容易產(chǎn)生復(fù)雜的句子結(jié)構(gòu)。
    There have been opened up to the vast and excellent science， in which my work is the beginning， ways and means by which other minds more accurate than wine will explore its remote corners.
    48. “range from …to…”結(jié)構(gòu)。這是一個(gè)常見結(jié)構(gòu)，譯時(shí)很多情況下應(yīng)變通處理，不能完全依靠辭典上的釋義。
    Computer applications range from an assembly line completely run by computers to a children toy responding to remote signals.
    49. “the way…”結(jié)構(gòu)
    I always thought she was a common-sense person who discussed things the way they ought to be discussed.
    50. 復(fù)雜賓補(bǔ)結(jié)構(gòu)
    In recent years， the development of sensitive and accurate measuring equipment has made it possible to measure the acuity of hearing of any individual at different frequencies.