they say,"we saw her in the street" 改为间接引语不用过去完成时吗

若主句为过去时态，变为间接引语的宾语从句通常要将时态往后推一个，即一般现在时变为一般过去时，一般将来时变为过去将来时，现在进行时变为过去进行时，现在完成时变为过去完成时，一般过去时也变为过去完成时
they say that they had saw her in the street .

They said they have seen her in the street.
应该是要用的。

They say that they saw her in the street

they say,"we saw her in the street" 改为间接引语
they say they saw her in the street.
刚刚错了，say应该还是say

they say that they saw her in the street