I am always confused with the two words "were" and "was." Is "were" past tense or present tense? What about "was"?
However, there are different forms, depending on which person usage it is.
1st person Singular: I am busy.
2nd person Singular: You are busy.
3rd person Singular: He/she is busy.
1st person plural: We are busy.
2nd person plural: You are busy.
3rd person plural: They are busy.
So you could have a sentence such as:
I was on my way to the shop and you were already there.
He was busy feeding the ducks while they were swimming.
It was a pity that I missed seeing you when you were in town.
Hope this helps.