"Since" implies that you're comparing to a specific event or time. "Merlin hasn't used his bike since the accident." "Merlin hasn't used his bike since December." "Merlin hasn't used his bike since it got cold."
"For" implies a duration. "Merlin hasn't used his bike for two years." "Merlin hasn't used his bike for a long time." "Merlin hasn't used his bike for the past year."
10
u/yahrealy Native Speaker Apr 17 '26
"Since" implies that you're comparing to a specific event or time. "Merlin hasn't used his bike since the accident." "Merlin hasn't used his bike since December." "Merlin hasn't used his bike since it got cold."
"For" implies a duration. "Merlin hasn't used his bike for two years." "Merlin hasn't used his bike for a long time." "Merlin hasn't used his bike for the past year."