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Tense of the verb tells when(time of an action) an action is done. There are three tenses of the verbs: past tense, present tense, and the future tense. Past tense tells about actions that happened in the past. “Was” or “were” are added before the main verbs to change it in past tense. Present tense tells about actions that are currently happening in the present(did some changes to the question). We add “is” or “are” to change the verb into present tense. Future tense tells about actions that will happen in the future. Adding “will” or “shall” to the verb will change it in future tense.
→I did some minor changes to the question too, you can check.