go through the motions
US /ɡoʊ θruː ðə ˈmoʊʃənz/
UK /ɡoʊ θruː ðə ˈmoʊʃənz/

1.
敷衍了事, 例行公事
to do something in a mechanical or unenthusiastic way, without genuine interest or effort
:
•
He was just going through the motions at work after he decided to quit.
他決定辭職後,在工作中只是敷衍了事。
•
She felt like she was just going through the motions in her relationship.
她覺得自己在感情中只是敷衍了事。