The Present Perfect Tense
www.perfect-english-grammar.com › present-perfectTo make the positive present perfect tense, use: 'have' / 'has' + the past participle Make the past participle by adding 'ed' to regular verbs (for example, 'play' becomes 'played') There are a few verbs that change their spelling when you add 'ed' (for example, 'study' becomes 'studied') We also have some completely irregular verbs