_____ about wild plants that they decided to make a trip to Madagascar for further research.A. So curious the couple were B. Such curious the couple were C. So curious were the coupleD. Such curious were the couple书上说so.that 要加助动词再加主谓,可这里答案选c,可were不是系动词吗,为什么要提前
问题描述：
_____ about wild plants that they decided to make a trip to Madagascar for further research.
A. So curious the couple were B. Such curious the couple were
C. So curious were the coupleD. Such curious were the couple
书上说so.that 要加助动词再加主谓,可这里答案选c,可were不是系动词吗,为什么要提前
答
这是个倒装句,so在句首用部分倒装,固定结构就是 so +adj+be动词+主语