1. The document discusses various rules regarding the use of verbs in English sentences. It covers topics like tense, subject-verb agreement, conditional sentences, inversion, conjunctions and different verb forms. 2. Specific rules covered include the use of verbs in the present indefinite tense with third person singular subjects, verbs in sentences expressing universal truths or facts, and verbs used with adverbs like 'always' or 'occasionally'. 3. The rules also discuss the use of auxiliary verbs like 'do', 'does' in negative and interrogative sentences without a form of 'be', verbs following 'WH' words in questions, and the use of different tenses like the present continuous.