He offered the boys some coffee. They declined politely.
他问那些小伙子要不要来点咖啡，他们婉辞了。
I gave it back politely.
我很客气地把它还了回去。
You can say 'with due respect' when you are about to disagree politely with someone.
（发表不同意见前的谦语）恕我冒昧，恕我直言
The audience are strangely subdued, clapping politely after each song.
观众们出奇地安静，只是在每首歌结束后报以礼貌性的掌声。
Both boys had good manners, politely shaking hands.
这两个男孩都很有礼貌，友好地握了手。