Grammar
Lots of FREE English grammar exercises and quizzes to help you practice English and use ESL worksheets for your English online classes.
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Indefinite Articles: A and An
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Having trouble with articles? Follow this easy-to-use lesson with grammar exercises for determining whether to use a vs an.
Present Simple Forms of "To Be" – Am / Is / Are
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The verb "to be" is one of the first verbs you learn in English. It helps you talk about yourself, other people, and things around you. In the present simple tense, "to be" changes into three forms: am, is, and are.