How tones actually work: 买 vs 卖
Mandarin has about 400 usable syllables. Give each one four or five tonal shapes and you get thousands of distinct words. That is why tones are not decoration — they are part of the word, as load-bearing as a vowel.
The classic beginner trap is the shortest pair in the language:
买 mǎi — to buy. Third tone: the pitch dips down and comes back up.
卖 mài — to sell. Fourth tone: the pitch drops hard, like a command.
Same consonant, same vowel, one tone apart — and the transaction flips. Say it wrong in a shop and you have just offered to sell the shopkeeper something.
The four tones, in plain terms
- 1st tone (ā): high and flat. Hold a note and don't move it. 汤 tāng, soup.
- 2nd tone (á): rising, like asking "huh?" 糖 táng, sugar.
- 3rd tone (ǎ): low, dipping down then up. 买 mǎi, to buy.
- 4th tone (à): sharp drop, like saying "No." firmly. 卖 mài, to sell.
Soup and sugar. Buy and sell. The syllable did nothing — the tone carried the entire meaning.
Drill pairs, not rules
You can memorize the four descriptions above and still flunk the first real conversation, because tones are a listening skill before they are a speaking skill. If your ear can't hear the dip, your mouth won't produce it.
That's why the free LearnTo Mandarin course ships a dedicated Tone Drills screen: 30 minimal pairs, a pair of characters side by side, audio for both, and you decide which is which. The pairs are chosen for real confusion, not textbook neatness:
- 四 sì (four) vs 十 shí (ten) — the classic number mix-up. One drops, one rises.
- 睡觉 shuì jiào (to sleep) vs 水饺 shuǐ jiǎo (boiled dumplings) — same syllables, very different evening.
- 妈 mā (mom) vs 马 mǎ (horse) — the most famous tone joke in Mandarin, 1st vs 3rd.
- 左 zuǒ (left) vs 右 yòu (right) — get these backwards at a crossroads and you'll end up somewhere else entirely.
Each drill carries a physical tip, because tones respond to gesture: for 买 vs 卖 the course tells you to hold your hand flat and dip-then-rise for mǎi, drop hard for mài. Your hand learns the contour, your voice follows.
Tones show up everywhere once you start listening
After a few drills you notice the traps stack: 问 wèn (to ask, 4th tone) vs 文 wén (language, 2nd tone) — which is exactly why 中文 Zhōngwén means "Chinese language." And some pairs aren't tone traps at all but listening tests: 是 shì (to be) and 事 shì (matter) share the same sound and tone, so context alone decides — the course includes those too, because real comprehension runs on context.
Every word in the course's 226-word curriculum arrives with its tone marked in pinyin and spoken aloud by the teacher, so the tone is never an afterthought bolted onto a flashcard.
Try it free
The whole thing is free — all 12 units, the 30 tone drills, and the recall quizzes — at learnsto.com/mandarin. Start Unit 1 tonight (your first word is 你好 nǐ hǎo); by Unit 7 you'll know exactly whether the shop is buying or selling.