Yes, that's correct! In passive voice, the focus is on the action and the recipient of that action rather than the doer (or subject) of the action.
For example, in the active voice, you might say, "The cat (subject) chased (verb) the mouse (object)." In the passive voice, this sentence would be rephrased as, "The mouse (subject) was chased (verb) by the cat (agent)."
In passive constructions, the agent performing the action can sometimes be omitted if it is not important or known, as in: "The mouse was chased."
The structure often follows the pattern:
- Form of "to be" + past participle of the main verb.
This construction can shift the emphasis and can be useful in various contexts, especially in scientific or formal writing.