得 (must / have to)

• Pinyin: děi
• Formation: Subject + 得 + Verb Phrase
• Hanzi breakdown: 得 = 彳(step) + 旦 (dawn) + 寸 (inch)

Meaning

得 (pronounced děi) functions as an auxiliary verb meaning 'must' or 'have to,' indicating necessity or obligation. It is extremely common in spoken Mandarin, especially in northern dialects.

得 (děi) is one of the most frequently used ways to express 'must' in colloquial Chinese, especially in northern Mandarin. It is more casual and conversational than 必须, which sounds more formal or serious. The negative form is 不用 (don't need to) rather than 不得, since 不得 (bùdé) has a different meaning ('not allowed to'). 得 can also express an inevitable consequence, as in 'if this continues, something will have to happen.' Be careful not to confuse this 得 (děi) with the structural particle 得 (de) used after verbs for complements (e.g., 跑得快).

Examples

1. 明天有考试，我今晚得好好复习。 There's an exam tomorrow — I have to review well tonight.
2. 快八点了，我得出门了。 It's almost eight — I have to head out.
3. 你感冒了，得多喝水多休息。 You've caught a cold — you need to drink more water and rest more.

Usage Guide

Context: spoken, everyday

Tone: conversational

Do Say

• 时间不早了，我得走了。
• 你得先把作业做完才能出去玩。
• 天气这么冷，出门得多穿点衣服。

Don't Say

• 你不得去看医生。(The negative of 得 (děi) meaning 'must' is 不用, not 不得 — 不得 (bùdé) means 'not allowed to') → 你不用去看医生。
• 我得了好好学习。(Do not add 了 directly after 得 (děi) — 得 is followed directly by a verb phrase) → 我得好好学习。

Origin & History

得 (děi) as an auxiliary verb meaning 'must' developed from the original meaning of 得 (dé) 'to obtain,' evolving through the sense of 'it is necessary to obtain' into the modern obligation meaning. This usage is especially prevalent in northern Mandarin dialects.

Cultural Context

Generation: All ages

Social background: Universal