“那个医生告诉我他暂时在医院帮忙”一定是过去时吗。the doctor tell me that he is helping in the hospital.不对吗

the doctor told me that he was helping in the hospital.

“那个医生告诉我他暂时在医院帮忙。”是在转述别人说的话。医生告诉我的事情是过去告诉的。所以用told，而不是tell。

谢谢