past indefinite tense || simple past tense

first time on YouTube, this video gives a unique and interesting definition of past indefinite tense. it proves that past can never be indefinite and brings forth modern definition of the tense. it states why no helping verb is used in this tense and argues about the use of helping verb in the negatives and interrogatives. it presents timeline and structures of the past indefinite and explains the formation of negatives and interrogatives.