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We use the Present Perfect Simple when we want to express the result or consequence of a past action or event that has relevance to the present moment.
This tense often indicates that an action or event happened at an unspecified time in the past but has some connection to the present.
Form: has/have + V3
For example: "I have finished my homework."
This sentence indicates that the homework has been completed, and there is a connection to the present moment because there is no homework left to do.
Signal words: "already", "just", "yet", "ever", "never", "since", "for" etc.
The Present Perfect Simple is used to express the result or consequence of a past action with relevance to the present, while the Present Perfect Continuous is used to emphasize the duration or continuity of an action or event that started in the past and is still ongoing in the present.
