When was this novel read?

This novel was read by me.

Active Voice: I read this novel.

Passive Voice: This novel was read by me.

When transforming a sentence from active voice to passive voice, the subject of the active sentence becomes the object of the passive sentence, and the object of the active sentence becomes the subject of the passive sentence. The verb is also changed to its passive form by adding the appropriate form of "be" and the past participle of the main verb.

In this case, the active sentence "I read this novel" has been transformed into the passive sentence "This novel was read by me." The subject "I" of the active sentence becomes the object "this novel" of the passive sentence, and the object "this novel" of the active sentence becomes the subject "me" of the passive sentence. The verb "read" has been changed to its passive form "was read" by adding the appropriate form of "be" (in this case, "was") and the past participle of the main verb "read."

By using the passive voice, the focus of the sentence is shifted from the person who performed the action (the reader) to the object or thing that received the action (the novel). The passive voice is often used when the doer of the action is unknown, unimportant, or intentionally left out of the sentence.

In summary, the active sentence "I read this novel" has been transformed into the passive sentence "This novel was read by me" by changing the subject to the object and the object to the subject, and by using the appropriate form of "be" and the past participle of the main verb.