The document discusses rules for forming the simple past tense of regular verbs in English. It states that most regular verbs form the simple past by adding "ed", but verbs ending in a consonant before "y" change the "y" to "ied" and verbs with one syllable ending in a consonant-vowel-consonant double the final consonant before adding "ed". It provides examples of regular verbs used in sentences in both their present and past tense forms.