Question

did he take your permission before he left? convert into passive voice​

Answer 1

Was your permission taken by him before you left?

Answer 2

ANSWER:

The newly formed interrogative sentence after converting it into passive voice is ‘Was your permission taken by him before he left?’

EXPLANATION:

The subject is the one who performs the action, that is mentioned in the sentence and it is this subject that comes before the action in the sentence. This is applied in cases where the sentence is present in active voice.  

Example: I have a good concentration while playing chess. (Where I is the subject and playing is the action)

When a sentence is written in passive voice, the subject is being acted up on by the verb, so the subject must come after the action in the sentence.

Example: Playing chess with good concentration is something I do.