要 (yào): Want, Will, Must | Chinese (Mandarin) Grammar

要 (yào) is one of the busiest words in Mandarin, and its three jobs — want, will/about to, and must — feel unrelated until you see the thread: 要 always points at something that is going to be realised, whether that's a desire you're pressing toward, an action you're about to take, or a requirement you're expected to meet. English splits this across want, will, and must/should, so the work here is learning to read one word three ways from context. The other half of the job is the negation, which does not behave the way English speakers expect: the negative of "want" is not 不要 but 不想, and 不要 means something else entirely.

要 as a full verb: "want (something)"

In its most concrete use, 要 is a full verb meaning want / need — followed directly by a noun. This is the 要 of ordering, shopping, and asking for things.

我要一杯咖啡，谢谢。

wǒ yào yì bēi kāfēi, xièxie

I'll have a coffee, thanks. (informal) — 要 + noun: 'want / will have' a thing.

这个多少钱？我要两个。

zhège duōshao qián? wǒ yào liǎng ge

How much is this? I'll take two. (informal) — 要 + number + measure word for 'I want / I'll take'.

Followed by a verb, this same "want" sense becomes "want to do":

我要回家了，太累了。

wǒ yào huí jiā le, tài lèi le

I want to go home now — I'm exhausted. (informal) — 要 + verb: want to / going to.

Note that 要 here is firmer than a polite wish. To order more softly — the "I'd like" of a cautious customer — Mandarin adds 想: 我想要一杯茶 ("I'd like a cup of tea") is gentler than the plain 我要一杯茶. We'll come back to the 要/想 contrast below.

要 for the future: intention and imminence

要 + verb also carries future intention — a plan you mean to carry out — and, with a sentence-final 了, imminence ("about to"). This is the "will / going to" of scheduling your own actions, as opposed to the predicting "will" of 会.

我明天要去上海出差。

wǒ míngtiān yào qù Shànghǎi chūchāi

I'm going to Shanghai on business tomorrow. (neutral) — a settled intention, so 要.

我要走了，明天见！

wǒ yào zǒu le, míngtiān jiàn!

I'm off now — see you tomorrow! (informal) — 要…了 marks an imminent action: about to leave.

快点儿，火车要开了！

kuài diǎnr, huǒchē yào kāi le!

Hurry up — the train's about to leave! (informal) — 要…了 for something on the verge of happening.

The 要…了 frame is the workhorse for "about to," and the sentence-final 了 is doing essential work: 要走 alone can read as "want to leave" or "will leave," but 要走了 pins it to "about to leave, any moment now." This imminent-aspect pattern (要下雨了 "it's about to rain," 天要黑了 "it's getting dark") is covered in full on the imminent 要…了 page.

天要下雨了，我们快回去吧。

tiān yào xià yǔ le, wǒmen kuài huíqù ba

It's about to rain — let's head back. (informal) — 要…了 with weather: on the verge.

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要 is the "will" of your own intentions and plans; 会 is the "will" of predictions. 我明天要去 = "I'm going tomorrow" (my plan); 明天会很冷 = "it'll be cold tomorrow" (my forecast).

要 as obligation: "must / should / have to"

The third job of 要 is obligation — must, should, need to — laying out what's expected or advisable. Same word, but now it's pointing at a requirement to be met rather than a desire or a plan.

过马路要小心。

guò mǎlù yào xiǎoxīn

You must be careful crossing the road. (neutral) — 要 as 'must / should': a piece of advice-turned-rule.

你要多喝水，少熬夜。

nǐ yào duō hē shuǐ, shǎo áoyè

You should drink more water and stay up late less. (informal) — 要 giving health advice: 'ought to'.

上课要关手机。

shàngkè yào guān shǒujī

You must turn off your phone in class. (neutral) — 要 stating a rule/requirement.

Context sorts the readings without any effort from the speaker. A subject wanting a thing (我要咖啡) is desire; a first-person subject + a future time (我明天要去) is intention; a second-person subject + advice or a rule (你要小心) is obligation. The obligation 要 sits alongside 应该 ("should") and 得 (děi, "have to"); their finer differences are on the obligation modals contrast page.

Reading	Pattern	Example	Gloss
want (a thing)	要 + noun	我要一杯茶 (wǒ yào yì bēi chá)	I want / I'll have a tea
want / going to (do)	要 + verb	我要回家 (wǒ yào huí jiā)	I want to / I'm going home
intention (future)	要 + verb (+ time)	我明天要去 (wǒ míngtiān yào qù)	I'm going tomorrow
imminence	要 + verb + 了	火车要开了 (huǒchē yào kāi le)	the train's about to leave
obligation	要 + verb	你要小心 (nǐ yào xiǎoxīn)	you must be careful

要 vs 想: pressing toward vs merely wishing

要 and 想 both translate as "want," and choosing wrong is one of the most common learner slips. The difference is strength and concreteness. 想 is would like / feel like — a wish, tentative and soft. 要 is want / intend to — firmer, more like a decision already taken.

我想去日本旅游，可是还没决定。

wǒ xiǎng qù Rìběn lǚyóu, kěshì hái méi juédìng

I'd like to travel in Japan, but I haven't decided yet. (informal) — 想 for a soft, undecided wish.

我要去日本了，机票都买好了。

wǒ yào qù Rìběn le, jīpiào dōu mǎi hǎo le

I'm going to Japan — I've already bought the tickets. (informal) — 要 for a settled, concrete plan.

So 想去 is "would like to go" and 要去 is "am going / intend to go." Because 要 can sound blunt or demanding, softening a request with 想 (or 想要) is often the more polite choice — 我想要一份沙拉 ("I'd like a salad") is gentler than 我要一份沙拉. The full comparison lives on the 想 (want, miss, think) page.

Negation: the trap English speakers fall into

Here is the part that catches everyone. You would expect the negative of 要 ("want") to be 不要 ("not want"). It isn't — or rather, 不要 exists but means something else. 不要 + verb is a prohibition: "don't!" To say you don't want to do something, you use 不想.

不要担心，一切都会好的。

bú yào dānxīn, yíqiè dōu huì hǎo de

Don't worry — everything will be fine. (informal) — 不要 + verb is a command: don't.

——你要不要一起来？——我不想去，太远了。

— nǐ yào bu yào yìqǐ lái? — wǒ bù xiǎng qù, tài yuǎn le

— Do you want to come along? — I don't want to, it's too far. (informal) — 'don't want to' is 不想, not 不要.

Before a noun, though, 不要 does mean "don't want (a thing)" — declining an offer: 我不要糖 ("I don't want sugar"). The trap is specifically 不要 + verb, which flips from "don't want to" to "don't!" And 别 (bié) is simply a shorter, equally common way to say the same prohibition — 别担心 = 不要担心 — as detailed on the 别 / 不要 (prohibitions) page.

我不要糖，谢谢，我在减肥。

wǒ bú yào táng, xièxie, wǒ zài jiǎnféi

No sugar for me, thanks — I'm on a diet. (informal) — 不要 + noun: declining a thing.

Common Mistakes

1. Using 不要 for "don't want to (do)." Before a verb, 不要 is a command, not a statement of preference. Use 不想.

❌ 我不要去他的派对。

Reads as a command 'don't go to his party!' To say you don't feel like going, use 不想去.

✅ 我不想去他的派对。

wǒ bù xiǎng qù tā de pàiduì

I don't want to go to his party. — lack of desire, so 不想.

2. Using 不要 for "don't have to / don't need to." "You don't have to come" is 不用 (bú yòng), not 不要 — which would order the person not to come.

❌ 明天你不要来。

Wrong if you mean 'no need to come' — this tells them 'don't come!'. For 'no need', use 不用来.

✅ 明天你不用来，我自己可以。

míngtiān nǐ bú yòng lái, wǒ zìjǐ kěyǐ

You don't have to come tomorrow — I can manage. — 'no need to' is 不用.

3. Using 想 for an obligation. "You should be careful" is 要 or 应该, never 想 — 想 is only desire.

❌ 开车的时候你想小心。

Wrong — 想 means 'want to', not 'should'. Advice/obligation is 要小心 or 应该小心.

✅ 开车的时候你要小心。

kāichē de shíhou nǐ yào xiǎoxīn

You must be careful when driving. — obligation, so 要.

4. Dropping the 了 from imminent 要…了. Without the sentence-final 了, the "about to" reading weakens and the sentence can drift back to "want to."

❌ 快点，电影要开始。

Incomplete — for 'about to start' you need the closing 了: 电影要开始了.

✅ 快点，电影要开始了。

kuài diǎn, diànyǐng yào kāishǐ le

Hurry, the film's about to start. — 要…了 marks imminence.

Key Takeaways

要 (yào) has three jobs: want (我要一杯茶 / 我要回家), intention or imminence (我明天要去 / 火车要开了), and obligation (你要小心).
要 vs 想: 要 is firm and concrete (要去 "am going"); 想 is a soft wish (想去 "would like to go"). Soften requests with 想 / 想要.
要 vs 会 for "will": 要 = your own intention; 会 = a prediction.
要…了 = "about to" — the sentence-final 了 is what makes it imminent; don't drop it.
Negation splits: 不要 + verb = "don't!" (prohibition, = 别); "don't want to (do)" = 不想; "don't have to" = 不用; 不要 + noun = declining a thing (我不要糖).

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