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分词 1.Primary care physicians who refuse to compromise quality are either driven out of business or to cash-only practices,further contributing to the decline of primary care. 分析：主干：...physicians...are either driven out of business or topractices... ①either... or...并列连接两个介词词组out of business和to cash-only practices,接在driven之后。②句子主语physicians有前置定语primary care和who引导的定语从句修饰。句末的现在分词短语contributing...作状语，表示伴随are driven...而来的结果。 译文：不愿降低服务质量的初级护理医生要么被迫停业，要么提供只收现金的服务，这进一步加剧了初级护理服务的下滑。 2.Ultimately we must get a handle on those issues as well,or a creature that outlived the dinosaurs will meet its end at the hands of humans,leaving our descendants to wonder how a creature so ugly could have won so much affection. 分析：主干：...we must get a handleor a creature...will meet its end... ①本句是由or连接的并列句，or表示 否则，要不然 。②前一分句中，get a handle on表示 开始理解或了解 ;后一分句中，主语a creature后有一个that引导的定语从句修饰，outlive 比 更长寿 ，现在分词短语leaving作状语，表示谓语 meet its end(玩完) 所造成的后果。leave...to ...中的不定式to wonder作our descendants的补语，wonder后接了一个how引导的宾语从句。 | 
