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题库 / Prep2007E2-SC-23
Scientists believe that unlike the males of most species of moth, the male whistling moths of Nambung, Australia, call female moths to them by the use of acoustical signals, but not olfactory ones, and they attract their mates during the day, rather than at night.
by the use of acoustical signals, but not olfactory ones, and they attract
by the use of acoustical signals instead of using olfactory ones, and attracting
by using acoustical signals, not using olfactory ones, and by attracting
using acoustical signals, rather than olfactory ones, and attract
using acoustical signals, but not olfactory ones, and attracting
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male call female moths to them using acoustical signals，using作状语
伴随状语连接词省略问题：
because/as/since/if/while/when/ with/by/means等表示因为/如果/伴随/通过/意味着等逻辑连接词可以省略，although/whereas/as if等表示转折和省略后引起语意变化的连接词不可省略。
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