Keep the word and its spoken setting together
A dictionary tells you a syllable’s tone category. Conversation tells you how that category sounds next to other syllables. Both kinds of information matter. If you learn a word only through one isolated pronunciation, you may expect the same full pitch movement in every sentence. If you memorize only one sentence’s surface sound, you may lose the word’s stable dictionary identity when its neighbors change. Connect the two: identify the base tones, then notice the phrase that contains them.
The Pinyin beside examples in this course normally preserves dictionary tones for 不 and 一 as well as third tone syllables. Therefore bù shì is a spelling reference even though 不 normally rises before 是 in ordinary connected speech. Some teaching materials instead write bú shì to show that surface pronunciation. Neither convention licenses mixing spellings unpredictably. Here, the explanation tells you when the spoken tone changes while the example keeps a stable reference spelling.
Mandarin is the language variety taught here. These rules should not be transferred to other Chinese languages, whose tone systems can be different. Even within Mandarin, speakers vary in pitch range, speed and some neutral syllable preferences. Learn the contrasts and the relevant neighboring tone rather than trying to reproduce one rigid musical note.
不是
bù shì
is not
你好
nǐ hǎo
hello
Let many third tones stay low
A third tone is often introduced with a dipping and rising contour. That is useful for identifying an isolated, carefully pronounced syllable, but it is not a command to make a large dip and rise every time. Before a first, second or fourth tone, a third tone normally has a low realization without a full final rise. Making an exaggerated rise before each following word can interrupt the phrase and obscure its ordinary rhythm.
Consider 很高, 很忙 and 很累. The first syllable has the same third tone category in all three. Its following tone is respectively first, second and fourth. In connected speech, keep 很 low and let the second syllable supply its own distinct contour. Do not turn 很 into a second tone merely because it is followed by another syllable. The special rising change requires a following third tone, which these three examples do not have.
The final syllable of an utterance can behave differently from a syllable inside a longer phrase. Emphasis and speaking rate also affect how much movement is audible. At this stage, your useful decision is not an exact numerical pitch target. It is whether the third tone is followed by another third tone or by one of the other full tones. That distinction prepares you for the next pattern.
很高
hěn gāo
tall
很忙
hěn máng
busy
很累
hěn lèi
tired
老师
lǎoshī
teacher
Recognize the first change in a third tone pair
When two third tone syllables belong together in an ordinary short phrase, the first is pronounced with a rising tone. The familiar greeting 你好 therefore does not usually contain two complete dipping contours. Its written base tones remain nǐ hǎo, while the first syllable rises in speech. The same relation occurs in 很好 and 很冷. The written third tone on the first syllable still identifies the word; it is not a spelling mistake that you must erase.
This process changes the pronunciation in context, not the meaning of the original word. The pronoun 你 remains the same pronoun whether it occurs before 好 or before a different tone. By learning the base category, you can predict a new context instead of treating each phrase as an unrelated exception. A dictionary and a recording can therefore give different looking descriptions without contradicting each other: one labels the underlying word, and the other demonstrates its spoken environment.
Longer sequences of third tones require attention to grouping. It would be misleading to promise one mechanical rule that changes every syllable except the last across any entire sentence. Word boundaries, phrase structure and emphasis matter. Start with the clear two syllable phrases here. When you later meet a longer chain, practice it as meaningful groups with a reliable spoken model rather than extending the short rule blindly.
很好
hěn hǎo
good
很冷
hěn lěng
cold
你好
nǐ hǎo
hello
Change 不 before a fourth tone
The negative word 不 has fourth tone as its dictionary form. Before another fourth tone, it normally changes to a rising second tone in connected speech. Thus the 不 in 不是, 不去 and 不累 rises. In the course’s Pinyin these remain bù shì, bù qù and bù lèi, with this note supplying the spoken change. Before first, second and third tones, ordinary full 不 retains its falling fourth tone: compare 不高, 不忙 and 不好.
This is a special behavior of 不. It does not mean that any two fourth tone syllables automatically become second plus fourth. 再见 has two fourth tone syllables in its base form; it is not pronounced by turning 再 into the 不 pattern. Timing and the size of the falls may adjust in natural speech, but that is different from claiming that its first syllable has the same rising change as 不 before 是.
The immediate spoken environment matters more than the translation. English “not” can be followed by many kinds of words, but English grammar does not determine the Mandarin tone. Read the next Mandarin syllable and identify its tone. Some rapid grammatical patterns can make 不 light; the present lesson uses full, ordinary negative statements so you can establish the central contrast before studying those additional contexts.
不高
bù gāo
not tall
不忙
bù máng
not busy
不好
bù hǎo
not good
不去
bù qù
not go
再见
zàijiàn
goodbye
Model a negative phrase
Explain the ordinary spoken tone of 不 in 不去.
- Find the dictionary tone of 去: it is fourth tone.
- The word 不 has a special rising change immediately before fourth tone.
- Keep bù qù in this course’s Pinyin while remembering the contextual pronunciation.
The 不 in 不去 normally rises in connected speech.
Use the number phrase to understand 一
The number 一 has first tone in its dictionary form and when reciting a counting sequence. In common number and classifier phrases, its tone changes according to the following syllable. Before a fourth tone classifier, it rises. Before a first, second or third tone classifier, it falls. These changes are especially useful because asking for one cup, one bottle or one book creates exactly the short phrases beginners use often.
Compare 一杯茶, 一瓶水 and 一本书. 杯 has first tone, 瓶 second and 本 third, so 一 is pronounced with a falling tone in all three ordinary phrases. In 一份, 份 has fourth tone, so 一 rises instead. The course keeps yī in the written Pinyin for these examples. A source that writes yì bēi or yí fèn is making the spoken change visible. Read its convention before deciding that the sources disagree about the phrase.
Do not replace every written yī with the same changed tone. Counting the number alone is a different context from placing it before a classifier. There are also larger word and grammatical environments beyond these examples. Our immediate goal is narrower and practical: identify the following classifier’s full tone and produce these familiar quantity phrases smoothly. Later learning can add other environments without changing this reliable starting contrast.
一杯茶
yī bēi chá
one cup of tea
一瓶水
yī píng shuǐ
one bottle of water
一本书
yī běn shū
one book
一份
yī fèn
one portion
Compare two quantities
Compare the spoken 一 in 一本书 and 一份.
- 本 has third tone. Before that classifier, 一 is pronounced with a falling tone.
- 份 has fourth tone. Before it, 一 is pronounced with a rising tone.
- Both examples keep yī as their base tone spelling in this course.
Compare your reasoning
The 一 falls in 一本书 and rises in 一份.
Treat a neutral syllable as context dependent
A neutral syllable is light and does not carry an independent full tone contour in the same way as the four full tone categories. Its pitch depends partly on the preceding syllable. Calling it a fifth fixed musical tone would therefore give you the wrong target. In familiar words and phrases such as 什么, 我的 and 我们, notice which syllable is light instead of assigning it an additional full rise or fall.
Neutral pronunciation can belong to a grammatical particle, such as 的 in a possession phrase, or to part of a word. These are related listening observations, but they are not evidence that the corresponding character never has a full tone in any other use. A character’s pronunciation must be learned in its actual word and grammatical function. The question particle 吗 is light in the ordinary questions taught here; another syllable written with a similar sound can carry a full tone and mean something different.
There is also variation among speakers, regions and degrees of emphasis. Do not assume that every second syllable of every two syllable word must become neutral. Follow the reading supplied for the particular beginner expression, compare whole phrases and keep the full versus light distinction audible. A short neutral syllable can be clear without being loud or stretched into an artificial full tone.
什么
shénme
what
我的
wǒ de
mine; my
我们
wǒmen
we; us
谢谢
xièxie
thank you
Separate a written decision from a spoken performance
A useful practice sequence begins with meaning. Choose a phrase you could actually use, identify its base tones, explain the relevant neighboring syllable, and then say the phrase as one meaningful unit. Compare 不忙 with 不累, or 很忙 with 很好. In each pair only one contextual condition changes. That makes the comparison more informative than repeating an unrelated list of difficult words.
The questions below test your understanding of those conditions. They cannot determine whether your voice produced the correct pitch movement. Selecting “rising” for 不 in 不是 is a grammatical and pronunciation decision, not a recorded speaking assessment. Use an available spoken model for listening and imitation, and seek feedback when you cannot hear a contrast reliably. Do not mistake a high quiz score for proof that every tone in spontaneous speech is already secure.
After studying, return without the explanations and reconstruct two contrasts aloud. Keep the words useful and the reasoning short: identify the next tone, then apply the relevant rule. Whole sentence intonation can express a question, surprise or emphasis, but it does not remove the lexical tone contrasts. Likewise, stress in an English translation is not a substitute for Mandarin tones. Your aim is an intelligible phrase whose word identities remain clear while its syllables connect naturally.
很忙
hěn máng
busy
很冷
hěn lěng
cold
不是
bù shì
is not
Notice the difference
Common mistakes
Do not rise on every third tone
Instead ofEvery third tone must dip and rise fully.
For this meaningA third tone often stays low before a nonthird full tone.
Compare 很忙 with 很好. Only the latter contains the short third tone pair that triggers the rising first syllable.
Do not change every fourth tone pair
Instead ofEvery fourth plus fourth pair becomes rising plus falling.
For this meaning不 has a special change before a fourth tone.
Compare 不是 with 再见. The special 不 rule does not turn 再 into a rising tone.
Do not freeze neutral pitch
Instead ofNeutral tone has one fixed pitch.
For this meaningNeutral pitch depends on its context.
A neutral syllable is light and lacks an independent full tone contour. Learn it inside the actual word or particle phrase.
Do not mistake spelling for sound
Instead ofWritten nǐ hǎo requires two full dipping contours.
For this meaningWritten base tones can remain unchanged while speech changes.
The first third tone in 你好 normally rises in connected speech.
From understanding to using
Make your own example.
Try these without answer choices. Say your answer aloud or write it below, then compare your reasoning with the model.
Your turn 1
Write “not busy” and “not go,” then explain which 不 changes in ordinary connected speech.
Compare with a model
不忙;不去 (bù máng; bù qù)
not busy; not go
忙 is second tone, so full 不 remains falling. 去 is fourth tone, so 不 rises before it.
- Keep the base spelling bù in both examples.
- Explain the following tone, not an English stress pattern.
Your turn 2
Produce “one book” and “one portion,” then identify the spoken tone of 一 in each.
Compare with a model
一本书;一份 (yī běn shū; yī fèn)
one book; one portion
The following classifier 本 has third tone and triggers falling 一. 份 has fourth tone and triggers rising 一.
- Keep the classifier attached to its quantity.
- Distinguish the course’s written reference from spoken pronunciation.
Put it into practice
Make the next choice.
Choose a response and learn why it works. Your score reflects your first answer to each question. You can revisit anything you miss.
Choose an answer, then open the explanation to check your reasoning.
Question 1
In this course, the Pinyin bù shì preserves which information?
- The dictionary tone spelling
- A claim that the negative word always falls here
Check the answer
Answer: The dictionary tone spelling
The dictionary tone spelling: Correct. The note explains the rising spoken 不 before fourth tone.
A claim that the negative word always falls here: The spelling convention preserves the base form; it does not deny the connected speech change.
Question 2
In an ordinary connected 很忙, how is 很 usually realized?
- As the rising change before another third tone
- Low, without a required full final rise
Check the answer
Answer: Low, without a required full final rise
As the rising change before another third tone: 忙 is second tone. The following tone does not trigger that specific change.
Low, without a required full final rise: Correct. 忙 has second tone, so this is not the two third tone pattern.
Question 3
In the short phrase 很好, which syllable normally receives the rising third tone change?
- 很
- 好
Check the answer
Answer: 很
很: Correct. It is the first of two third tone syllables in this phrase.
好: The contextual change applies to the first syllable, not automatically to the last.
Question 4
Does the third tone change in 你好 create a different pronoun?
- Yes, the pronoun becomes a different vocabulary item
- No, it is the same word in a different sound environment
Check the answer
Answer: No, it is the same word in a different sound environment
Yes, the pronoun becomes a different vocabulary item: A regular connected speech change does not replace the pronoun.
No, it is the same word in a different sound environment: Correct. Its contextual pronunciation changes while its word identity remains.
Question 5
Which negative phrase has a rising 不 in ordinary connected speech?
- 不去
- 不忙
Check the answer
Answer: 不去
不去: Correct. 去 has fourth tone.
不忙: 忙 has second tone, so full 不 keeps its falling tone here.
Question 6
Which negative phrase keeps full falling 不 before a third tone?
- 不累
- 不好
Check the answer
Answer: 不好
不累: 累 is fourth tone, so 不 normally rises before it.
不好: Correct. 好 is third tone.
Question 7
Should 再见 copy the special rising change in 不是?
- No
- Yes
Check the answer
Answer: No
No: Correct. The 不 rule is a special lexical pattern, not a rule for every fourth tone pair.
Yes: Both base tones in 再见 are fourth, but 再 does not receive the special 不 change.
Question 8
When reciting the number 一 by itself in a counting sequence, use its ordinary base tone:
- Always fourth tone
- First tone
Check the answer
Answer: First tone
Always fourth tone: The falling variant is not the isolated counting form.
First tone: Correct. The quantity phrase changes require a relevant following environment.
Question 9
What is the ordinary spoken tone of 一 in 一本书?
- Falling
- Rising
Check the answer
Answer: Falling
Falling: Correct. The following classifier 本 has third tone.
Rising: The rising variant in these quantity patterns comes before a fourth tone classifier.
Question 10
What is the ordinary spoken tone of 一 in 一份?
- Always level because it is written yī
- Rising
Check the answer
Answer: Rising
Always level because it is written yī: This course retains the base spelling while explaining the changed pronunciation.
Rising: Correct. 份 has fourth tone.
Question 11
Does neutral tone mean one fixed fifth pitch contour?
- No
- Yes
Check the answer
Answer: No
No: Correct. It is light and its pitch depends on context.
Yes: That would incorrectly make it an independent fixed contour like a full tone.
Question 12
Should every second syllable of every two syllable Mandarin word be neutral?
- Yes
- No
Check the answer
Answer: No
Yes: Many second syllables retain full tones. Position alone does not determine neutrality.
No: Correct. Learn the pronunciation of the particular word and recognize variation.
Question 13
What does correctly answering this written tone quiz demonstrate directly?
- Understanding of the tested pronunciation conditions
- Verified accuracy of your recorded pronunciation
Check the answer
Answer: Understanding of the tested pronunciation conditions
Understanding of the tested pronunciation conditions: Correct. Actual spoken pitch still requires listening and speaking feedback.
Verified accuracy of your recorded pronunciation: This quiz does not record or assess your voice.
Question 14
For a longer chain of third tones, what is the better next step?
- Change every syllable except the final one mechanically
- Learn the meaningful grouping with a reliable spoken model
Check the answer
Answer: Learn the meaningful grouping with a reliable spoken model
Change every syllable except the final one mechanically: That rule ignores phrase structure and emphasis.
Learn the meaningful grouping with a reliable spoken model: Correct. Longer sequences involve grouping and cannot be reduced to one blanket sentence rule.
Keep the conversation going
What to practice next
Produce the two messages before opening the questions. Later, return without the model and explain the distinction that changed your answer.
Sources and editorial notes
By Loquus ·
Source checked with AI assistance
Original explanations checked against the cited sources with AI assistance. Not independently certified by a human language specialist. Standard Mandarin with simplified characters is the teaching baseline. Pinyin preserves dictionary tones for bu and yi; connected speech changes are explained explicitly.
- MIT OpenCourseWare, Julian Wheatley: Unit 1
- MIT OpenCourseWare, Julian Wheatley: Unit 2
- MIT OpenCourseWare, Julian Wheatley: Unit 3
- MIT OpenCourseWare, Julian Wheatley: Unit 4
- MIT OpenCourseWare, Julian Wheatley: Character Lesson 2
- MIT OpenCourseWare, Julian Wheatley: Character Lesson 3
- MIT OpenCourseWare, Julian Wheatley: Pinyin
- The Open University, Getting Started with Chinese 1: Tone changes
- The Open University, Getting Started with Chinese 1: Pinyin and tones
- Tokyo University of Foreign Studies: Verb predicates and basic word order
- Yoyo Chinese: Pinyin Tone Pairs Table and 20 Essential Words
Learning research behind the practice
Worked examples, retrieval practice, and later review inform the activities. These studies do not establish the effectiveness of this specific lesson.