4. Auxiliary and Modal Verbs 1
Main verbs have only two tenses, namely present and past (e.g. go; went). However these two tenses alone are by themselves cannot express 1)aspect – (completeness, incompleteness, continuity, completed with relevance to the present), 2) negation, 3) question, 4) passivization of voice 5) numeral value of subject (singular/ plural), and 6) gender
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