I’m not a very smart man. I’m trying to count how many years I’ve been working at my new job. I started in May 2011.

If I count the years separately, I get that I’ve worked 4 years – 2011 (year 1), 2012 (year 2), 2013 (year 3), 2014 (year 4).

But if I count the years as intervals, I get that I’ve worked 3 years 2011 to 2012 (year 1), 2012 to 2013 (year 2), 2013 to 2014 (year 3).

Have I worked 4 years or 3 years?

**Answer**

For a short analogy: I was born in 1986, so I am 27 now. But I have lived in four different decades (the 80s, the 90s, the 00s and the 10s). This is not the same as forty years.

In the same way, you worked *in* four different years, but not *for* four years.

**Attribution***Source : Link , Question Author : bodacydo , Answer Author : G Tony Jacobs*