Since vs. For

The words “since” and “for” are both used when you’re talking about time.

 

The difference is that “for” is used with a period or duration of time, while “since” is used with a point or exact moment in time.

 

“For” can be used with all tenses, but “since” is most often used with perfect tenses.

 

 That means “for” comes before time expressions like “30 minutes”, “6 months” and “10 years”, while “since” comes before time expressions like “Monday”, “January” or “2010”.  

 

You could say, “he walks for 1 hour everyday” or “he has lived in Bangalore for 10 years”. 

 

Using “since” you would say “he’s been walking since 7am”, or “he has lived in Bangalore since 2010”.