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What are the English grammar rules to make present simple tense? Grammar rules for the present simple tense: 1. To form the Present Simple Tense we use the verb's base form (go, work, speak, study). 2. In 3rd person singular (he, she, it), the base form of the verb takes -s/es. 3. For positive sentences, we do not normally use the auxiliary. 4. For the 3rd person singular (he, she, it), we add s to the main verb or es to the auxiliary. 5. For the verb to be, we do not use an auxiliary, even for questions and negatives. Main verb or auxiliary verb only cannot make a tense. We need to place pronouns, nouns and other classes of words properly, depending on whether the sentence is declarative or interrogative. In positive sentence the main verb changes form according to the subject. In negative statements the auxiliary verb "do-does" is added after the subject. In negative statements and questions the main verb stays in its base form. In negative statements and questions but the auxiliary verb changes form according to the subject. |