Tone changes for third tones

Also known as: tone sandhi and 变调规则 (biàndiào guīzé).

Tone Change Rule for Consecutive Third Tones

When a 3rd tone (such as “yě”) is followed by another 3rd tone in a group, the first 3rd tone changes to a 2nd tone (such as “yé”).

This rule applies to words as well as phrases. It even applies to what was probably the first word you ever learned in Chinese!

• 你好 níhǎo hi

Examples

Remember, normally you do not write the tone change. We're just doing it here to make it extra clear.

Here are examples of individual words composed of two third tones:

Audio	Chinese	We Write	We Say	English
ke3yi3	可以	kěyǐ	kéyǐ	may, can
you3dian3r	有点儿	yǒudiǎnr	yóudiǎnr	a little (too); somewhat
xiang3fa3	想法	xiǎngfǎ	xiángfǎ	idea, thinking
suo3yi3	所以	suǒyǐ	suóyǐ	so, therefore
lao3ban3	老板	lǎobǎn	láobǎn	boss

Here are examples of two simple third-tone words which result in a tone change when combined:

Audio	Chinese	We Write	We Say	English
hen3hao3	很 好	hěn hǎo	hén hǎo	very good
hen3xiao3	很 小	hěn xiǎo	hén xiǎo	very small
hen3zao3	很 早	hěn zǎo	hén zǎo	very early
hen3shao3	很 少	hěn shǎo	hén shǎo	very few; rarely
hen3yuan3	很 远	hěn yuǎn	hén yuǎn	very far

For more examples of this 3-3 type, see also tone pair 3-3.

Multiple Consecutive Third Tones

The smart students always ask, "OK, so what happens when there are a bunch of 3rd tones in a row?" This is an excellent question!

In theory, all third tones would become second tone except for the very last one. In practice, such a "string" of third tones doesn't usually go beyond three in a row. This is because in natural speech multiple third tones in a row will usually broken up by pauses. In this case, the last word/character in each "group" will be pronounced as a third tone.

So, in theory, it would go like this:

• 3-3-3-3-3-3 → 2-2-2-2-2-3

In practice, it usually goes something like this:

• 3-3-3-3-3-3 → 2-2-3, 2-2-3

Beginners should not worry about this, as lots of third tones in a row is not super common.

Why Tone Changes Are Not Written

Normally the tone changes above are not written in the pinyin; you are supposed to just know the rule and apply it if you say the word(s) aloud. The reason for this is that in many cases if the tone change is written, you will be confused as to what the “normal” tone of a character is actually supposed to be. For example, you might wonder, “is this a third tone written as a second tone because it’s followed by a third tone, or is this character always a second tone?” Always writing the original tones solves this problem. But it also means that you really need to know your tone change rules. Learn them well!

An Alternative Way to Indicate Tone Changes

Some textbooks or software (such as Wenlin) indicate a tone change with a small dot under the letter with the tone mark. This can be nice for beginners, but it is not part of standard pinyin.

Sources and further reading

• Wikipedia: Tone sandhi: Mandarin Chinese

A2 pronunciation points