标题: 请教GWD2-Q34,很困惑 [打印本页] 作者: dabobowa1111 时间: 2010-3-10 21:00 标题: 请教GWD2-Q34,很困惑 NASA’s methodical approach to the exploration of Mars has not yet answered the questions of whether biological life forms ever emerged on Mars and whether, presuming such life forms having left fossil traces to begin with, those traces can still exist in some moist recesses of the cold and arid planet.
A. and whether, presuming such life forms having left fossil traces to begin with, those traces can B. and whether, if it is presumed that such life forms left some fossil traces to begin with, can those traces C. and whether, presuming such life forms left fossil traces to begin with, those traces D. and, presuming such life forms did leave some fossil traces to begin with, if they can E. and, presuming such life forms to have left fossil traces to begin with, if they Answer: 我最初选的是C，但答案是a 查了XDF的一个分析说是B，因为A、C的presuming 都没有逻辑主语，似乎也很对 请NN出现解答一下吧作者: JayNicholas 时间: 2010-3-10 21:14
如果选B的话 WHETHER后面的CAN不就成了倒装结构了么 我也疑惑了作者: dabobowa1111 时间: 2010-3-11 17:32
倒装结构是没问题的，不算错，而且是正确答案的标志吧作者: venus2elva 时间: 2010-3-11 20:02
我也比较偏向C，C和A好纠结啊。
B不对。1，“if it is presumed that” 不如presuming简洁。2，去掉插入语后，划线部分变成“and whether,..., can those traces”,这里不是疑问句，不能倒装。
C不对。 “and whether, presuming such life forms left fossil traces to begin with, those traces”去掉了情态动词can，改变了原来的意思：原意说“痕迹是否能够存在”，C说“痕迹是否存在”。即使痕迹能够存在，那些痕迹也有可能被其他因素抹去了，从而不存在了。记得老PREP语法笔记上出现过多次:随意去掉情态动词的选项是错误的。虽然有些绝对，但这种说法不无道理。
A正确。and whether, presuming such life forms having left fossil traces to begin with, those traces can 插入语甚至使用了完成时态，强调假如生命形式曾经留下过痕迹。
