替 (tì): On Behalf Of / For | Chinese (Mandarin) Grammar

替 (tì) is the coverb of substitution: you do something in someone's place or on their behalf — 我替你去 ("I'll go in your place"), 替我问好 ("give my regards for me"), 别替他担心 ("don't worry on his behalf"). Like every coverb, the 替-phrase sits before the verb. What makes 替 worth its own page is the precise nuance English "for" hides: 替 doesn't just mean "for your benefit," it means "so that you don't have to." That "instead of you" flavour is what separates 替 from its neighbours 给 (a plain recipient) and 为 (a sake or goal).

The core pattern: 替 + person + verb

Picture someone who could or should do a task themselves — and you step in and do it for them. That stepping-in is 替. The person you're covering comes right after 替, then the action.

今天我有事，你能替我值班吗？

jīntiān wǒ yǒu shì, nǐ néng tì wǒ zhíbān ma

I've got something on today — could you cover my shift for me? (informal) — you take my place on duty.

他生病了，我替他上了一节课。

tā shēngbìng le, wǒ tì tā shàng le yì jié kè

He was sick, so I taught a class in his place. (neutral) — I stood in for him.

你要是没空，我可以替你去开会。

nǐ yàoshi méi kòng, wǒ kěyǐ tì nǐ qù kāi huì

If you're busy, I can go to the meeting in your place. (informal)

能不能替我把这封信寄了？

néng bu néng tì wǒ bǎ zhè fēng xìn jì le

Could you mail this letter for me? (informal) — you run the errand I'd otherwise do.

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The one-line test for 替: could the person have done it themselves, and you're stepping in? If yes — covering a shift, mailing a letter, going to a meeting, passing on a greeting — reach for 替. If it's just a gift or message reaching a recipient, that's 给, not 替.

替 for feelings: worrying and rejoicing on someone's behalf

替 stretches naturally to emotions felt on someone's behalf — worrying for them, being glad for them. Here it overlaps with 为, and both are heard; 替 keeps a slightly warmer, more personal "I feel it so you needn't" tone.

别替我担心，我一个人能行。

bié tì wǒ dānxīn, wǒ yí ge rén néng xíng

Don't worry about me — I can manage on my own. (informal) — 替我 = fretting on my behalf.

我们都替你感到高兴。

wǒmen dōu tì nǐ gǎndào gāoxìng

We're all so happy for you. (neutral) — 替你 overlaps with 为你 here.

见到你爸妈，替我问个好。

jiàndào nǐ bàmā, tì wǒ wèn ge hǎo

When you see your parents, give them my regards. (informal) — 替我问好: greet them in my stead.

替 vs 给 vs 为: three kinds of "for"

The three benefactive coverbs divide the territory cleanly once you see the nuance each adds:

Coverb	Nuance	Example	Meaning
给 (gěi)	a recipient receives it	给你打电话	call you (you get the call)
替 (tì)	in your place / instead of you	替你值班	cover your shift for you
为 (wèi)	for the sake / benefit of	为你着想	look out for you

So 替你买 and 给你买 differ subtly: 给你买 buys the thing for you to have, while 替你买 buys it because you couldn't go yourself — I'm your stand-in shopper. Often both fit, but 替 adds the "so you don't have to" layer.

你没时间的话，我替你去买菜。

nǐ méi shíjiān dehuà, wǒ tì nǐ qù mǎi cài

If you don't have time, I'll go grocery shopping in your place. (informal) — 替你 stresses standing in for you.

替 as a full verb: "to stand in / take over"

Because coverbs are recycled verbs, 替 also works as a full verb meaning "to replace / take over from." Here it stands alone as the predicate, with no second verb after it.

你累了，我来替你。

nǐ lèi le, wǒ lái tì nǐ

You're tired — let me take over for you. (informal) — 替你 alone is the action: 'stand in for you'.

老板不在，由小王替他做决定。

lǎobǎn bú zài, yóu Xiǎo Wáng tì tā zuò juédìng

The boss is away, so Xiao Wang makes the decisions in his stead. (neutral)

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Position tells you which 替 you've got, exactly as with other coverbs: if a second verb follows (替你去, 替他上课), 替 is the coverb "on behalf of"; if 替 stands alone as the predicate (我来替你), it's the full verb "take over / stand in." For the machinery behind that test, see what is a coverb.

Common Mistakes

1. Using 替 for a plain recipient. If the person simply receives the action, use 给. 替你打电话 means calling a third party on your behalf — not calling you.

❌ 我替你打电话，问问你怎么样。

Contradictory — if you're the one being called, use 给: 我给你打电话. 替你打 = call someone else for you.

✅ 我给你打电话，问问你怎么样。

wǒ gěi nǐ dǎ diànhuà, wènwen nǐ zěnmeyàng

I'll call you to see how you're doing. — 给你 for the recipient.

2. Trailing the 替 phrase after the verb. The stand-in phrase leads; it can't sit after the action.

❌ 我去开会替你。

Wrong order — the 替 phrase comes first: 我替你去开会.

✅ 我替你去开会。

wǒ tì nǐ qù kāi huì

I'll go to the meeting in your place. — 替你 before the verb.

3. Using 替 with a goal instead of a person. 替 needs a person whose place you take; a goal or purpose takes 为了.

❌ 替健康，他戒烟了。

Incorrect — 替 needs a person; for a goal use 为了: 为了健康，他戒烟了.

✅ 为了健康，他戒烟了。

wèile jiànkāng, tā jiè yān le

For the sake of his health, he quit smoking. — 为了 for the goal.

4. Using 给 where 'in your place' is meant. Covering a shift is standing in, not handing something over; that's 替, not 给.

❌ 明天我给你值班。

Odd — covering a shift is substitution: 明天我替你值班.

✅ 明天我替你值班。

míngtiān wǒ tì nǐ zhíbān

I'll cover your shift tomorrow. — 替你 for taking your place.

Key Takeaways

替 means doing something in someone's place / on their behalf — 替你去, 替我问好 — with the 替-phrase before the verb.
Its signature nuance is "so you don't have to": use it when you step in for a task the person could have done.
It extends to feelings on someone's behalf — 替你担心, 替你高兴 — overlapping with 为.
Keep the three apart: 给 = recipient receives, 替 = in your place, 为 = for your sake.
替 is also a full verb ("take over / stand in"): 你累了，我来替你.

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