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。