对 vs 对于 (toward/regarding)

• Pinyin: duì / duìyú
• Formation: 对 / 对于 + Object + Verb / Adjective
• Hanzi breakdown: 对 = 又 (hand) + 寸 (inch/measure); 于 = a preposition character

Meaning

Both 对 (duì) and 对于 (duìyú) mean 'toward' or 'regarding,' introducing the object of an action or attitude. 对 is more versatile and common in everyday speech, while 对于 is more formal and emphasizes the topic being discussed.

对 and 对于 are both prepositions that introduce the target or object of a verb. The key differences are: (1) 对 can be used in a much wider range of contexts, including emotional attitudes, actions directed at someone, and abstract topics. (2) 对于 is restricted to introducing topics or themes for discussion, evaluation, or attitude — it cannot be used with verbs describing direct interactions like 说, 笑, or 看. (3) 对于 can be moved to the beginning of a sentence for topicalization, while 对 in some of its uses cannot. (4) In spoken Chinese, 对 is strongly preferred; 对于 appears mostly in written or formal contexts. Learners often overuse 对于 where only 对 is appropriate.

Examples

1. 她对这份工作非常满意。 She is very satisfied with this job.
2. 对于公司的未来发展方向，各部门意见不一。 Regarding the company's future development direction, departments have differing opinions.
3. 他对自己的孩子要求很严格。 He is very strict with his children.

Usage Guide

Context: spoken, written, everyday

Tone: descriptive

Do Say

• 政府对于环境保护问题一直高度重视。
• 她对待每一位客户都非常耐心。
• 对于初学者来说，这本教材的难度偏高。
• 他对音乐有着很深的热情。

Don't Say

• 老师对于我笑了一下。(对于 cannot be used with verbs describing direct physical actions like 笑、说、看 — use 对 instead) → 老师对我笑了一下。
• 对于他打了一拳。(对于 cannot introduce the object of a physical action — use 对 for actions directed at someone) → 对他打了一拳。
• 她对于很友好。(对 and 对于 must have an explicit object — the target cannot be omitted) → 她对人很友好。

Origin & History

对 originally meant 'to face' or 'to respond' in Classical Chinese, derived from the idea of two things facing each other. 对于 emerged later as a more explicit prepositional form, with 于 adding a formal directional marker to clarify the relationship between subject and object.

Cultural Context

Generation: All ages

Social background: Universal