Expresses an experience or a finished action a result in the present. I've lost my purse. The result: I don't have my purse with me. With time period (this week, this month, today). I've seen my mum today.

This section is about the Present Perfect tense, which is used to express an experience or a finished action with a result in the present. It is often used with time periods like 'this week,' 'this month,' and 'today.' The example given is 'I've seen my mum today.'