There are only 2 tenses in Arabic, the past and the present. What a piece of luck! I thought our teacher was joking at first, but he doesn't joke about important things like that.
This is like going on a journey and finding out where we are going as we turn each bend. Up a slippery mountain or across a shady meadow. Mostly it's up mountain passes.
I could google all about it, but I like the surprises in a wierd way. It is rare in life to encounter a new language, so I'm appreciating the unexpected nature of all this.