Irregular verb - A verb that does not follow the normal pattern of inflection, Interrogative sentence - Have you played?, Have - I, You, We, They, Present perfect - Is made up of two elements: the appropriate form of the auxiliary verb to have (in the present) and the "past participle" of the main verb., Affirmative sentence - I have played, Regular verbs - They are the verbs that are formed by the verb + ed, e.g. played, arrived, looked, Has - He, She, It, Negative sentence - He hasn't gone,

Present perfect

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