Present Perfect Progressive or Present Perfect Continuous

Signal words	Use	Form	Examples affirmative	Examples negative	Examples interrogative
all day the whole day how long since for	action began in the past and has just stopped how long the action has been happening emphasis: length of time of an action	have/has + been + infinitive + -ing	I have been working.	I haven't been working.	Have I been working?
			He has been working.	He hasn't been working.	Has he been working?
			I have been going.	I haven't been going.	Have I been going?
			He has been going.	He hasn't been going.	Has he been going?