So for example, if I'm speaking in English, I have to speak grammatically differently if I'm talking about past rain, "It rained yesterday," current rain, "It is raining now," or future rain, "It will rain tomorrow."
Så for eksempel, hvis jeg taler engelsk,  skal jeg tale anderledes grammatisk set hvis jeg taler om regn i datid, "Det regnede i går," regn i nutid, "Det regner nu," eller regn i fremtiden, "Det kommer til at regne i morgen."