1. As part of the present perfect tense:
* Structure: Have/Has + Past Participle (seen)
* Example: I have seen that movie before.
* Meaning: The action of seeing happened in the past and its effect continues in the present.
2. As part of the past perfect tense:
* Structure: Had + Past Participle (seen)
* Example: I had seen that movie before, so I didn't want to watch it again.
* Meaning: The action of seeing happened before another past action.
3. After "to be" (is, am, are, was, were, been):
* Example: The movie is seen as a classic.
* Meaning: Describes a state of being or perception (passive voice).
4. In passive voice constructions:
* Structure: Be + Past Participle (seen)
* Example: The suspect was seen leaving the building.
* Meaning: The action is performed on the subject, not by the subject.
Incorrect Usage:
* Avoid using "seen" as the past tense of "see." The correct past tense is "saw."
Example:
* Incorrect: I seen the movie yesterday.
* Correct: I saw the movie yesterday.