A---表原因D---引导定语从句,从句主语是书,非被动,不用concernedA---倒装B---定语从句,which is based,省略which isC---哪一件D---by far至今为止C--make me understood让我被理解,make me (to)(be)understood。。。括号中省略
a as表原因b concerned做定语a 倒装a 表伴随,做状语c which 哪个d by far固定搭配d make sb do sth