Present tense forms
Present tense shows action that happens now or action that happens routinely. The present progressive tense shows an action happening now. An auxiliary verb (am, is, or are ) precedes the -ing from (progressive form) of the verb. The present perfect tense shows an action that began in the past. An auxiliary verb (have or has) precedes the past participle form of the verb. The present prefect progressive tense also shows action that began in the past and is continuing in the present. Auxiliary verbs (have been or has been) precede the verb written in its - ing form (progressive form).