do somebody the courtesy of doing something
成語所屬單字courtesy
do somebody the courtesy of doing something — 慣用語
1. to be polite enough to perform a specific action that shows respect for another
1.慣用語
釋義
禮貌性地做某事（以表達尊重）
to be polite enough to perform a specific action that shows respect for another person, especially by giving them information or notice
例句
Ezra did me the courtesy of explaining why he could not attend the meeting.
The manager did the staff the courtesy of telling them about the change before the announcement.