An example of was is someone saying they were going to the park, but now they're not.
Origin of wasMiddle English from Old English wæs, 1st and 3d person; personal (grammar) singular of wesan, to be from Indo-European base an unverified form wes-, to dwell, stay from source Sanskrit vast?, house: not origin, originally connected with be
From Middle English was, from Old English wÃ¦s, from Proto-Germanic *was, (compare Scots was, Dutch was, Low German was, German war, Swedish var), from Proto-Indo-European *hâ‚‚wes- (“to reside"). The paradigm of "to be" has been since the time of Proto-Germanic a synthesis of three originally distinct verb stems. The infinitive form be is from Proto-Indo-European *bÊ°ew- (“to become"). The words is and are are both derived from Proto-Indo-European *hâ‚es- (“to be"). Lastly, the past forms starting with w- such as was and were are from Proto-Indo-European *hâ‚‚wes- (“to reside").