Is were a plural or singular verb?

A singular verb is one that has an s added to it in the present tense, such as writes, plays, runs, and uses forms such as is, was, has, does. A plural verb does not have an s added to it, such as write, play, run, and uses forms such as are, were, have and do. E.g.

When to use were or was?

When to use were

Whereas was is the singular past tense of to be, were is used for both the third person plural past tense (they and we) and the second person past tense (you). In the past indicative, were acts similar to was. “They were at the store,” you could say, for example.