The past impacts on the future because, for an example that if Archimedes hadn't found out what pi equals, (3.141592654) we wouldn't be able to find the area of a circle. Another reason is that the past influences us and encourages us to move on forward and so, it impacts a lot in the present and the future.
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
The past is bitten and 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
The conjugation of to have:will have (future)have (present)had (past)
Verbs tell you if a sentence is past present or future.