The third tone in Chinese: how to say it and when it changes

October 9, 2026 · 6 min read

The third tone in Chinese is the low tone. Textbooks draw it as a check mark, "down and up", but it only sounds that way in a syllable said on its own, and sometimes at the very end of a sentence. Inside a word, before any other tone, only the first half of the check mark is left: the voice drops briefly and stays down, with no rise. And before another third tone it is read as a second tone. We checked this against the speaker recordings of the words in our course, and you can listen to all of it below.

How to pronounce the third tone: a syllable on its own

Start with how the 3rd tone in Chinese sounds by itself. The voice begins a little below the middle, goes down to the very bottom of your range and rises a little at the end. Tap and listen:

More examples: hǎogood wǒI nǐyou shuǐwater.

Listen to the middle of the syllable. What matters in the third tone isn't the rise at the end but the low part. The voice often gets a bit rough and creaky there, the sound English speakers know as vocal fry. That's normal for native speakers, and it's a good sign: you've really reached the bottom. The rise at the end is short and optional; many speakers simply end the syllable low.

A common beginner mistake is to draw the check mark carefully with your voice: deep down and high up. It comes out long, and to the ear such a syllable is easy to take for a second tone, because the ear latches onto the rise.

The third tone in a word: the half third tone

In speech syllables follow one another, and there's no time for the full check mark. So before a first, second or fourth tone the third tone is said by half: a small dip, and that's it. No rise at all. This is called the half third tone; textbooks also call it third tone sandhi or modulation.

Listen to the first syllable of each word. It's the same everywhere, short and low, and the next syllable starts noticeably higher:

• 老师lǎoshīteacherthird + first
• 好吃hǎochītastythird + first
• 手机shǒujīcell phonethird + first
• 小时xiǎoshíhourthird + second
• 以前yǐqiánbefore; agothird + second
• 请问qǐngwènexcuse me, may I askthird + fourth
• 早饭zǎofànbreakfastthird + fourth
• 考试kǎoshìexamthird + fourth

The same happens before a neutral tone: in 我们 wǒmen — we and 早上 zǎoshang — morning the first syllable is low, and the light syllable after it sounds a little higher.

A third tone stands before another syllable far more often than alone, so the half third tone isn't an exception: it's the main form of the third tone. You'll say the full check mark much less often than the short low syllable.

The third tone at the end of a word

When the third tone comes last, nothing stops it from sounding in full. If the word is said on its own or there's a pause after it, a small rise may appear at the end: 上午 shàngwǔ — morning, before noon 自己 zìjǐ — oneself 地铁 dìtiě — subway.

But even here the rise isn't required. In fast speech the voice just goes down and fades out there. If you say the last syllable low with no rise, it won't be a mistake. If you lift it too high, you risk turning it into a second tone.

Tone changes in Chinese: two third tones in a row

Two low syllables in a row are awkward to say, and the language gets around it. The rule: when two third tones meet, the first is read as a second tone. The voice rises, and only the second syllable stays low. Written as two third tones, said as "second + third":

• 你好nǐhǎohellosounds like ní hǎo
• 水果shuǐguǒfruitsounds like shuí guǒ
• 好久hǎojiǔa long timesounds like háo jiǔ
• 理解lǐjiěto understandsounds like lí jiě

The mark in pinyin doesn't change: dictionaries and textbooks still show two third tones, and you have to make the switch yourself. The good news is that the rule is simple, and you get used to it from your very first "hello".

Three third tones in a row

There's no single answer here: it all depends on which words are more closely tied together and how fast you speak. Take the phrase 我很好 wǒhěnhǎo — I'm very well. "Very" and "good" belong together, so hěn definitely rises and hǎo stays low. The first syllable, wǒ, is usually low in unhurried speech, a half third tone, and in fast speech it may rise into a second tone too. Both are fine.

A practical rule: keep the last third tone in the chain low, raise the syllable before it, and don't worry about the rest; that comes with practice.

That's nearly all there is to tone changes in Chinese: the only other words that change their tones are 不 and 一, and they are covered briefly in the article on tones.

Third tone vs second and fourth

By ear the third tone gets confused with both its neighbors. One question helps sort it out: at what height does the syllable start, and where does it end?

• Third and fourth. Both go down, but the fourth starts high, at the top of your voice, and falls sharply. The third is low from the start, so it has almost nowhere to fall. Compare: mǎito buy màito sell.
• Third and second. The 2nd tone in Chinese is a rise: it starts in the middle and goes straight up, ending high, like the "Huh?" you say when you didn't catch something. In the third tone the main thing is the low part, and the rise, if there is one, is short and not high. Compare: máhemp mǎhorse.

You can play every syllable in all four tones in the pinyin chart, which is handy when you want to compare the third tone with the fourth or the second.

How to practice the third tone

• Think "low", not "check mark". Find the lowest comfortable note of your voice: that's where the third tone lives. If your voice creaks a little there, you're doing it right.
• Learn the tone in pairs of syllables. A syllable on its own is the rarest case. Take two-syllable words and say them in series: first "third + first" (老师, 手机), then "third + second" and "third + fourth".
• Make a contrast. After a low third tone the next syllable should start clearly higher. If both syllables are at the same height, the first one wasn't low enough.
• Two third tones are a series of their own. In words like 你好 and 水果, get ready for "up, then down" in advance. In time it stops needing attention.
• Check against a model. From the inside you can't hear whether you got a low syllable or a rise slipped in. You need a speaker's recording and something that shows your voice next to it.

If tones are still new to you, start with the overview of the four tones, and for practice words have a look at the HSK 1 word list.