The document explains verb tenses in English by providing examples of past, present, and future tense verbs. It discusses how to form the past tense with "ed" endings or changing the verb, the present tense using "am/are/is" plus the "-ing" form, and the future tense using "will." It then gives examples for the reader to practice identifying and writing the verb tenses for different verbs like watch, run, go, sing, fall, hop, and write.