Passive Voice Transformation:

The boy was being comforted by his mother.

Explanation:

When transforming the sentence from active voice to passive voice, the following steps are taken:

1. Identify the subject, verb, and object in the active sentence.
- Subject: his mother
- Verb: was comforting
- Object: him

2. Move the object to the subject position in the passive sentence.
- Object: him
- Subject in passive: him

3. Change the verb to its passive form by using the appropriate tense of the verb "to be" and adding the past participle of the main verb.
- Verb in passive: was being comforted

4. If the original active sentence contains a preposition after the verb, it should be included in the passive sentence as well.
- No preposition in the original sentence, so none is included in the passive sentence.

Passive Voice Sentence:

The boy was being comforted by his mother.

This passive sentence emphasizes the boy as the receiver of the action rather than his mother as the doer. The focus shifts from the mother comforting the boy to the boy being comforted.

Summary:

- The active sentence "His mother was comforting him" was transformed into the passive sentence "The boy was being comforted by his mother."
- The subject in the active sentence (his mother) became the object in the passive sentence (by his mother).
- The verb in the active sentence (was comforting) was changed to its passive form (was being comforted).
- The preposition "by" is used in the passive sentence to indicate the doer of the action (his mother).
- The passive sentence emphasizes the boy as the receiver of the action.

He was being comforted by his mother.....