When the subject of the sentence performs the action, the sentence is in ———- when the subject of the sentence receives the action, and the person or thing doing the action follows the verb, the sentence is in ——-.

When the subject of the sentence performs the action, the sentence is in the active voice. In the active voice, the subject is the doer of the action or the one carrying out the verb.

On the other hand, when the subject of the sentence receives the action, and the person or thing doing the action follows the verb, the sentence is in the passive voice. In the passive voice, the subject is acted upon or receives the action instead of performing it.

To determine whether a sentence is in the active or passive voice, you can examine the sentence structure and the relationship between the subject, verb, and object. In an active voice sentence, the subject typically comes before the verb, while in a passive voice sentence, the subject typically comes after the verb.

Example of active voice:
"The boy kicked the ball."
In this sentence, "the boy" is the subject performing the action, "kicked" is the verb, and "the ball" is the object receiving the action.

Example of passive voice:
"The ball was kicked by the boy."
In this sentence, "the ball" is the subject receiving the action, "was kicked" is the verb, and "by the boy" indicates who performed the action.

Identifying whether a sentence is in active or passive voice can be helpful for understanding the emphasis, clarity, and flow of the sentence, as well as the relationship between the subject and the action.