To make the
Positive Present Perfect tense, use: '
have' / '
has' +
past participle.
You can 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.