附带 (fù dài) is an adverb meaning 'incidentally,' 'as a bonus,' or 'in addition to the main thing.' Literally, 附 means 'to attach' or 'to be attached to,' and 带 means 'to bring along' or 'to carry.' Together, they convey the idea of something coming along with or attached to the primary action or item—often unexpectedly or as an extra benefit. It’s commonly used in both spoken and written Chinese, especially when highlighting an unplanned or secondary advantage.

This word often appears after verbs or at the beginning or middle of a sentence to introduce an additional result or feature. It carries a neutral-to-positive connotation and is frequently used in contexts like shopping, services, learning, or daily interactions where extras are offered—such as free gifts with purchase, extra features in software, or unexpected benefits from an activity.