These are tenses that describe an action that began in the past but is related to or continues in the present. These tenses are recognized by the presence of auxiliary verbs such as “have” and “has.”
Examples of present perfect tenses are:
These examples show that an action was taken in the past but will continue in the future. In the first example, for instance, Sarah took her father’s advice, and the action will continue into the present. In the same light, if you took the wrong class, the event will continue into the present, even though it happened in the past.
To form the present perfect tense, the subject should be linked with “has” or “have,” and the past participle.
So, you will have: SUBJECT + HAVE/HAS + PAST PARTICIPLE.
For example:
Present perfect tense: positive, negative and question forms
Present perfect tense: adverbs
Present perfect tense vs. past simplle tense