A Regular verbs in the Simple Past must be learned by heart or memorized through a list, whether they are conjugated in the singular or in the plural.
B Verbs in the Simple Future are conjugated by adding “will” before the bare infinitive or base form of a verb, which is the infinitive without “to”.
C Verbs in the Simple Present are conjugated by adding “-s, -es or -ies” to the bare infinitive or the base form of a verb (infinitive without “to”) whenever it is being conjugated in the plural.
D Irregular verbs in the Simple Past are conjugated by adding “-d, -ed or -ied” to the bare infinitive or base form of a verb (infinitive without “to”), whether it is being conjugated in the singular or in the plural.
E The negative form of verbs in the Simple Present are made of the auxiliary verb “did” and the negative adverb “not” as the negative form of verbs in the Simple Past are made of “do not” or “does not” written before the bare infinitive or base form of a verb.