Present perfect simple

subject + have + past participle

• action completed in the past
• present result of a past action
• repetition

"I have finished my homework"

"She isn't going to the party, she has broken her leg"

"I've been twice to the swimming pool this week"

Present perfect continuous

subject + have + been + verbING

• action still continuing at the time of speaking
• cause of present situation
• duration

"She's been working all morning"

"The children are tired because they have been playing all day long"