rules of present continuous and past continuous tense and simple present and simple past tense

Simple Past Tense Rules Subject + V2 + Object Past Continuous Tense Rules Subject + was + V1 + ing + Object (Singular) Subject + were + V1 + ing + Object (Plural) Simple Present Tense Rules Subject + V1 + s/es + Object (Singular) Subject + V1 + Object (Plural) Past Continuous Tense Rules Subject + is/am/are + V1 + ing + object