一道定语从句选择题 主要还是考介词
问题描述：
一道定语从句选择题 主要还是考介词
The poor man has never earned sufficient income.to support his family.
A.within which.B.in which.C.on which.D.beyond which
原文翻译 以及 具体理由
答
选C. The poor man has never earned sufficient income on which to support his family. 翻译：这个可怜的人从来没有获得足够的收入来维持他的家人（的生计）. on 有“靠,依靠”的意思,例如： The...