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
答案为A,我选了C
疑惑:
白勇的语法全解上说现在完成时形式的分词不能做定语修饰名词,可是A中 having left 。。。不就是修饰life forms了吗
c错误。whether 引导的实际上是壮语前置的句子,whether those traces can still exist in some moist recesses of the cold and arid planet, presuming such life forms having left fossil traces to begin with。 如果这么放置,你能察觉为什么c错误了吗?