IT'S 3 YEARS SINCE I LAST WENT ABROAD
I HAVEN'T BEEN ABROAD FOR 3 YEARS
SAM HASN'T VISITED HIS RELATIVES FOR 5 MONTHS
IT'S 5 MONTHS SINCE SAM LAST VISITED HIS RELATIVES
SUE HASN'T BEEN TO THE DOCTOR FOR A YEAR
IT'S A YEAR SINCE SUE LAST WENT TO THE DOCTOR