将这句话直接引语变为间接引语..."i bought the house 10 years ago,"he said.

问题描述:

将这句话直接引语变为间接引语..."i bought the house 10 years ago,"he said.
"i bought the house 10 years ago,"he said.
he said that he _______ bought the house 10 years ______.
不应该是 had
为什么是had bought

He said that he had bought the house 10 years before.