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  Home    Grammar    Auxiliary verb Contact  
American English Grammar
Auxiliary verb
Learning objectives
  • Learn the definition of an auxiliary verb
Definition of an auxiliary verb

  • An auxiliary verb is:

  • There are three auxiliary verbs in English which are irregular verbs and can be used as main verbs in a sentence

    • "be" is used with the present participle in progressive (continuous) verbs and with the past participle in the passive voice

    • "do", "don't", "does", and "doesn't" are used with negative statements and questions in the present simple tense while "did" and "didn't" are used in the past simple tense

    • "have" is used with the past participle to form the perfect aspect

  • Modal verbs are also auxiliary verbs but they are different since they cannot function as a main verb




















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