礼貌 + 地 + Verb
The noun 礼貌 (lǐmào) means "politeness," "courtesy," or "manners." It can also function as an adjective meaning "polite" when used with 地 as an adverb. Use 礼貌 to describe courteous behavior or manner, and add 地 after it to modify a verb (e.g., 礼貌地鞠躬, "to bow politely").
他非常有礼貌,见到老师总是主动打招呼。
tā fēicháng yǒu lǐmào, jiàndào lǎoshī zǒngshì zhǔdòng dǎ zhāohu.
He is very polite and always greets teachers first when he sees them.
她礼貌地拒绝了对方的邀请。
tā lǐmào de jùjué le duìfāng de yāoqǐng.
She politely declined the other person's invitation.
跟长辈说话要注意礼貌。
gēn zhǎngbèi shuōhuà yào zhùyì lǐmào.
Be mindful of your manners when speaking to elders.