间接引语时态的变化指的是主句和从句吗.She said,"I am happy."变为间接引语是She said she was happy.was是根据直接引语的am的时态变的,还是根据主句的said的时态变的?

问题描述:

间接引语时态的变化指的是主句和从句吗.
She said,"I am happy."
变为间接引语是She said she was happy.
was是根据直接引语的am的时态变的,还是根据主句的said的时态变的?

根据主句的said的时态改变