Question

he distributed masks change into passive voice​

Answer 1

The sentence in the passive voice is:

Masks were distributed by him.

• The given sentence is in the active form.

• In case of active voice, the subject directly performs an action.

So, the structure is: Subject+ verb+ object

• In case of passive voice, the subject interchanges its position with the object.

Also, a 'by' gets added between the verb and the subject in this case.

So the structure is: Object+ verb+ by + subject.

Answer 2

Here is the correct answer along with explanation:

Marks were distributed by him.

Explanation

The verb in the sentence was Simple Past in the active form (distributed). When we convert the active voice of Simple Past into passive voice, we use passive form equivalent to the active form. The active form in Simple past is 'V2' or Simple Past form of the verb. The object is made the subject and vice versa; 'by' is added. The passive form in Simple Past is was/were +V3.  

Active Voice: S+V2+O.

Passive Voice: O+was/were+V3+by+S.