Question

doctor Ke Aane Se Pahle Rogi Mar chuka tha translate to English

Answer 1

The patient was the dead before the doctor arrived.

This can prove to be an appropriate conversion of the sentence you asked for but instead of this sentence you can also use another conversion in place of this one, which is as under:

The patient was dead even before the doctor arrived.

Or another sentence can be :

The patient was dead before the arrival of the doctor.

Answer 2

Answer:

the patient died before doctor arrived