Mandarin Chinese → Portuguese
Portuguese uses 35 sounds. You already own 15 of them from Mandarin Chinese. The other 20 are the work — and 16 of those are the dangerous kind: close enough to something you already say that you will substitute them without hearing yourself do it.
The silent swaps
Your mouth has something close enough to reach for. These survive for years precisely because they sound right to you — the fix is hearing the difference first, not trying harder.
the move: velar → palatal
Portuguese: wine · written "nh"
Spanish writes this ñ, French gn, Portuguese nh.
Your /ŋ/ is the one in máng 忙 (busy).
the move: alveolo-palatal → postalveolar
Portuguese: key · written "x", "ch", "s (final)"
Also every syllable-final s: os livros = /uʒ ˈlivɾuʃ/.
Your /ɕ/ is the one in xiè 谢 (thanks).
the move: close, but not identical
Portuguese: yes · written "im", "in"
Your /i/ is the one in yī 一 (one).
the move: close, but not identical
Portuguese: good · written "õ", "om", "on"
Your /o/ is the one in wǒ 我 (I).
the move: close, but not identical
Portuguese: one, a · written "um", "un"
Your /u/ is the one in wǔ 五 (five).
the move: retroflex → postalveolar
Portuguese: today · written "j", "g"
Your /ʐ/ is the one in rén 人 (person).
the move: voiced
Portuguese: finger · written "d"
Brazil: /d͡ʒ/ before i — dia sounds like 'jee-a'.
Your /t/ is the one in dà 大 (big).
the move: voiced
Portuguese: green · written "v"
A real v, unlike Spanish where b and v merged.
Your /f/ is the one in fàn 饭 (rice / meal).
the move: voiced
Portuguese: house · written "z", "s"
s between vowels is /z/.
Your /s/ is the one in sān 三 (three).
the move: front → central
Portuguese: small · written "e (unstressed)"
The vowel that vanishes. Often deleted outright, which is why European Portuguese sounds like a run of consonants.
Your /i/ is the one in yī 一 (one).
the move: open-mid → close-mid
Portuguese: fear · written "e", "ê"
Your /ɛ/ is the one in xiè 谢 (thanks).
the move: mid → near-open
Portuguese: bed · written "a"
Unstressed a, and a before a nasal.
Your /ə/ is the one in mén 门 (door).
the move: close-mid → open-mid
Portuguese: grandmother · written "o", "ó"
avó /ɔ/ grandmother vs avô /o/ grandfather — one accent apart.
Your /o/ is the one in wǒ 我 (I).
Words you may say identically
Two or more Portuguese sounds landing on one sound of yours. Until the ear separates them, the mouth cannot — which is what the ear trainer is for.
Genuinely new
Nothing in Mandarin Chinese sits close to these. They sound foreign in your mouth — which is the good news: you can hear that you are not saying them yet.
wool
lá 'there' vs lã 'wool' — the nasality is the whole difference.
Closest thing you own: — but mid → near-open.
time
Closest thing you own: — but open-mid → close-mid.
car
Back in the throat, like French r. Brazil often makes it /h/.
Closest thing you own: — but retroflex → uvular.
expensive
One tap.
Closest thing you own: — but nasal → tap.
Rhythm and pitch
The layer spelling never records, and the one that makes a correct sentence still sound foreign.
| Mandarin Chinese | Portuguese | |
|---|---|---|
| Rhythm | Syllable-timed | Stress-timed (Portugal) |
| Stress | Stress is a matter of length and clarity rather than pitch: a stressed syllable holds its full tone, an unstressed one goes neutral and short. | Contrastive and written. The default is the second-to-last syllable; anything else takes an accent, and the accent also picks between open and close vowels — avó /ɔ/ is a grandmother and avô /o/ is a grandfather. |
| Pitch | lexical tone — pitch changes the word | No lexical tone. Intonation carries questions on its own — Portuguese changes nothing else about the sentence, so the rise is doing all the work. |
What you have that Portuguese doesn't
27 sounds with no job in Portuguese. They are not mistakes — but they are where an accent leaks in, because a sound you own is easy to use when a hard one is due.
The honest caveat
This is a prediction from the shape of two sound systems, not a recording of you. It says what your inventory makes likely — it cannot know that your Mandarin Chinese has a regional variety that already owns one of these, or that you learned Portuguese from someone whose accent you copied. A teacher listening to you beats it. Use it to know what to listen for.
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