0hi02br 02br 00yes we can considerate the "model verb" as a past tense but only in "could" because could refer to the past but actually it depend the context e.g if it is a sentense it can be past but if it is question it usually refer to polit request.02br 02br 00that what i know Thank you0-
I go to the store - no model I have to go to the store - model "have to" I must go to the store - model "must" (same as "have to") I sing - no model I have to sing - model "have to" I must sing - model "must"
It isn't always past tense...sometimes it is just hypothetical. present hypothetical: I would like to fly...but I can't present hypothetical: I would go with you...but I don't have a car. present hypothetical: Could I have a piece of cake...if I may. "could" can be present (as a question), or past, or a hypothetical past: I could hear it. present: Could I have a piece of