Yeah, sothissentence I usedtogotothegymonSaturdaysmeans I wenttothegymonmanySaturdaysinthepast, Butthesentence I wenttothegymlastSaturdaydescribesoneeventinthepast.
It's thepastsimpletotalkabout.
WhathappensnowUse a presenttense.
I usedtogorunningeveryday, butnow I gorunningonce a weeklisteningtoBBCLearningEnglishonwe'retalkingaboutusedtolet's take a lookatnegatives.