The present perfect simple can be used:
- To talk about past experiences in our life.
- To talk about the recent past.
There are two very important things you need to know:
- The auxiliary verb have (contracted to ‘ve, for the subjects I, you, we, you and they) and has (contracted to ‘s, for the subjects he, she, it –third person of singular).
- The past participle of the verb (the third column of the irregular verbs, or –ed for regular verbs).
This is the formula:
|SUBJECT||HAVE/HAS (auxiliary verb)||Main VERB||COMPLEMENTS|
|SUBJECT||HAVEN’T/HASN’T (auxiliary verb + not)||Main VERB||COMPLEMENTS|
|(Wh- word)||HAVE/HAS||SUBJECT||(ADVERB of FREQUENCY)*||Main VERB||COMPLEMENTS|
|Have||you||(ever)**||danced||hula in Hawaii?|
*Adverbs of frequency aren’t only used in interrogatives. They are used just before the main verb. E.g: I have never played this game before.
Ever is an adverb of frequency used in interrogatives that means “in your whole life”.