“动词变化有一个”是说直接引语变成间接引语的时候,引语中的动词要往前推一个时态,现在时需改为过去时态；过去时态改为完成时；过去完成时则保留原来的时态.如：
1)She said. "I have lost a pen."→She said she had lost a pen
2)She said. "We hope so."→She said they hoped so.
3) She said. "He will go to see his friend."→She said he would go to see his friend.