The gardener said that he cut that tree down yesterday对还是The gardener said that he had cut that

问题描述:

The gardener said that he cut that tree down yesterday对还是The gardener said that he had cut that
tree down yesterday对?说明理由

The gardener said that he had cut that tree down yesterday.正确
主句是一般过去式,间接引语用过去完成时.
园艺师是之前说的这番话之前,已经把树给砍了,所以,是过去的过去:过去完成时.