看我那么理解你的话对不对 over whether significant warming will occur and what impact it would have中, over介词后面要加名词做宾语,所以whether是引导名词性从句,连词and,暗示what也要是名词性从句,如果是what impact it would have, the thing (which impact) it would have 中,which impact 做would have的宾语,请指教,谢谢阿
-- by 会员 peter3008 (2010/10/7 3:41:23)