om forteller om et tidspunkt i framtida. i beskriver en periode, noe som varer en viss tid. på bruker vi om et resultat, når man blir ferdig med noe i løpet av en viss tid.
about tells of a time in the future.in describing a period, something that lasts a certain amount of time.on, we use about a result, when you're done with something in the course of a certain period of time.
about speaks of a time in the future. in describing a period, which lasts for a certain time. on we spend about a result, when you finish with something during a certain time.