Past tense is a verb form which is marked by time (tense).

The past tense is used for actions in a time which has already happened. In order to explain and understand past tense, it is useful to imagine time as a line on which the past, the present tense and the future tense are positioned.

Words in English have several tenses, including many common past tenses. The two that are used the most are the simple past tense and the perfect tense