Question

He is watching us.
Active to passive.

Answer 1

We are being watched by him

Answer 2

Active Voice refers to a sentence in which the subject is performing the action.

Passive Voice refers to a sentence in which the subject undergoes the action. In other words, it is writing the sentence in reverse order.

Example: Evan is writing a poem. (Active)

               A poem is being written by Evan. (Passive)

NOTE: Sentences that convey habitual actions cannot be changed to passive mode.

He is watching us. (Active)

We are being watched by him. (Passive)