Present perfect would describe through phrasal verb “look back”
Present perfect continuous has the same idea, more precisely it means “look back from now”
Teacher’s explanations:
present perfect = emphasize continuing action/event
present perfect continuous = emphasize duration/length of time
present perfect continuous = emphasizes recent time or now
Example:
I have been seeing that movie before. = not correct
I have seen that movie before. = correct
Present perfect continuous = give a reason for why something is true now.
Example:
I'm late because I have been trying to eat breakfast very quickly.
This class was recorded and published on Youtube here:
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