Grammar Basics · 3-minute read
Since or for?
Use since for a starting point and for for a duration.
The simple rule
Since Monday names the starting time; for two days names how long.
See the difference
✓ Say thisI have lived here for three years.
✕ Avoid thisI have lived here since three years.
Try it yourself
Say the correct example aloud, then create a sentence about your own life using the same pattern.