Definition
必需 (bì xū) is a formal verb meaning 'must have, be essential' — it emphasizes that something is indispensable, stronger than the general 'need' of 需要 (xū yào). It often appears in the structure '是…必需的' (is essential for). Unlike the adjective 必要 (bì yào, 'necessary'), 必需 is a verb that can directly take an object (必需空气).
verb
to needto requireto be essential (as a verb)
Easily confused
- 必须bì xūsound-alikemust; have to; be required to
Examples
- 必需。Rénlèi bì xū kōngqì hé shuǐ cáinéng shēngcún.Humans need air and water to survive.
- 必需。Zhèxiē gōngjù shì shīgōng bì xū de.These tools are essential for construction.
- ，必需。Chūguó liúxué qián, nǐ bì xū hùzhào hé qiānzhèng.Before studying abroad, you need a passport and a visa.
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