SAT语法 关于SVO,doing/done 和SVO done/doing

问题描述:

SAT语法 关于SVO,doing/done 和SVO done/doing
Our modern solar calendar,established in 1582,is based on the J.Calendar,introduced by JC.
实际上这道题考的是平行结构!

有逗号时,doing/dong动作 的发出者为S,没有逗号时,doing/dong动作的发出者为O我做了道题, Our modern solar calendar, established in 1582, is based on the J. Calendar, introduced by JC.这句话没错, 但我的理解是 J. calendar 是JC 创建的, 但有的书上说SVO,doing/done …. S与分词,SVOdoing/done …. O与分词,所以introduce在此情况下主语是Our modern solar calendar!这样就不对了嘛!怎么回事?麻烦你了!