John said to his parents,“I had learned 500 Chinese words by the end of last term.”这句话变为间接引语 怎么变?last term

问题描述:

John said to his parents,“I had learned 500 Chinese words by the end of last term.”
这句话变为间接引语 怎么变?last term

last month 不需要变.
John told his parents that he had learned 500 Chinese words by the end of last term .