present perfect simple: an action that happened at an unspecified moment in the past, recent events which have a result in the present, actions that finished very recently, actions or situations which started in the past and continue in the present., to emphasise the completion and result of an action, or how many times an action happened,, present perfect continuous: to emphasise the process and duration of an action, to emphasise that an action finished very recently or is in incomplete but the result is often something we can see, hear or feel,

present perfect simple or continuous

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