It is an adverb, not a verb,; it can accompany a Present, a Past, a Present Perfect, a Past Perfect and a Future verb.
Occupied is the past tense of occupy.
FUTURE: going PRESENT: go PAST: gone
The past tense is watched.The present tense is:I/You/We/They watch.He/She/It watches.The present participle is watching.The future tense is will watch.
The word 'noticed' is generally referring to the past tense.
There is a past, present, and future. There was a past; there is a present and there will be a future.
Past - was Present - is Future - will be
its past present and future we was there in the past we is in the present and we is the future
Past: Lost Present: lose Future: lose
Past: bit Present: bite Future: will bite
past - lost present -lose future - will lose
Present - I/you/we/they go. He/she/it goes. Past - Went. Future - Will go.
Future
future
present and future
Verbs tell you if a sentence is past present or future.
The conjugation of to have:will have (future)have (present)had (past)