Question

The critic wrote a scathing review. ========change into passive

Answer 1

The critic wrote a scathing review--->Active Voice

A scathing review was written by the critic--->Passive Voice

We change the tense of the sentence from past tense to past perfect tense. Also the work done by the doer is brought before the subject.

Answer 2

ACTIVE VOIVE:
"The critic wrote a scathing review"
lt is in simple past tense.Here the highlight is WHO wrote the scathing review.

Now ,lets change it into PASSIVE VOICE
---------->>>>
=THE SCATHING REVIEW WAS WRITTEN BY THE CRITIC
Here V2 form of write(wrote) --->>V3 form of write(written)
And the highlight is WHAT did the critic write

HOPE IT HELPS