NOBODY HAS CLEANED THE KITCHEN FOR ONE WEEK
IT'S BEEN ONE WEEK SINCE SOMEBODY CLEANED THE KITCHEN/ THE LAST TIME SOMEBODY CLEANED THE KITCHEN WAS A WEEK AGO
HE HASN'T SLEPT FOR 2 DAYS
IT'S BEEN 2 DAYS SINCE HE LAST SLEPT/ THE LAST TIME HE SLEPT WAS 2 DAYS AGO
THE LAST TIME HE FLEW TO MADRID WAS 2 DAYS AGO
HE HASN'T FLOWN TO MADRID FOR 2 DAYS
THE HAVEN'T WON A GAME FOR 3 YEARS
THE LAST TIME THE WON A GAME WAS 3 YEARS AGO / IT'S BEEN 3 YEARS SINCE THEY WON A GAME
HE HAS NEVER CAUGHT A FISH BEFORE
THIS IS THE FIRST TIME HE HAS CAUGHT A FISH
THIS IS THE FIRST TIME SHE HAS EVER EATEN TACOS
SHE HAS NEVER EATEN TACOS BEFORE
IT'S 8 HOURS SINCE I LAST TOOK MY MEDICINE
I HAVEN'T TAKEN MY MEDICINE FOR 8 HOURS