1. Meaning and Usage
The grammar structure "A 变成 B" (A biànchéng B) is used to express a complete transformation or change from one state, identity, or form (A) into another (B).
- 变 (biàn) means "to change" or "to become."
- 成 (chéng) is a result complement meaning "to finish," "to succeed," or "to turn into."
Together, 变成 translates to "to turn into," "to become," or "to transform into." In this structure, B must always be a noun, noun phrase, or a state represented by a noun. It cannot be a simple adjective.
2. Formulas and Examples
Case 1: Natural or Spontaneous Transformation
This formula is used when a subject (A) naturally or automatically changes into something else (B).
$$\text{Subject (A)} + \text{变成} + \text{Noun/Noun Phrase (B)}$$
水变成了冰。 Shuǐ biànchéng le bīng. Water turned into ice.
这个小村庄现在变成了一个大城市。 Zhège xiǎo cūnzhuāng xiànzài biànchéng le yí gè dà chéngshì. This small village has now become a big city.
Case 2: Causing Something to Change (Using the "把" Construction)
When an agent actively forces, translates, or manipulates A to make it become B, we use the "把" (bǎ) disposal structure.
$$\text{Subject} + \text{把} + \text{A} + \text{变成} + \text{B}$$
魔术师把兔子变成了鸽子。 Móshùshī bǎ tùzi biànchéng le gēzi. The magician turned the rabbit into a pigeon.
他把车库变成了办公室。 Tā bǎ chēkù biànchéng le bàngōngshì. He turned the garage into an office.
3. Essential HSK Tips & Common Mistakes
Mistake 1: Using "变成" before a simple Adjective
English speakers often translate "become + adjective" (e.g., "become rich," "become hot") directly into "变成 + adjective". In Chinese, 变成 must be followed by a noun . If you want to say "become [adjective]", you should use "变 + Adjective + 了" or "变得 + Adjective" .
- Incorrect:
天气变成热了。 Tiānqì biànchéng rè le. The weather became hot.
- Correct:
天气变热了。 Tiānqì biàn rè le. The weather became hot.
- Correct (using 变成 with a noun phrase):
他变成了一个富有的人。 Tā biànchéng le yí gè fùyǒu de rén. He became a rich person.
Mistake 2: Confusing "变成" (biànchéng) with "当" (dāng) or "成为" (chéngwéi)
While all three words relate to "becoming" something, they are used in different contexts:
当 (dāng): Used for professions or social roles (e.g., "to work as / to be a teacher").
成为 (chéngwéi): A formal word for achieving a positive, significant status or identity (e.g., "to become a member," "to become a hero").
变成 (biànchéng): Focuses on physical, biological, or structural transformation (e.g., "caterpillar turns into a butterfly," "wood turns into ash").
Incorrect (awkward in standard Chinese):
我想变成一个医生。 Wǒ xiǎng biànchéng yí gè yīshēng. I want to turn into a doctor. (Sounds like a magical transformation rather than a career choice)
- Correct:
我想当一个医生。 Wǒ xiǎng dāng yí gè yīshēng. I want to be a doctor.
HSK Exam Tip: Spotting the Result Complement "成"
In HSK grammar and reading sections, remember that 成 (chéng) functions as a result complement indicating success or completion. Whenever you see a verb of change (like 变 biàn , 改 gǎi , 翻译 fānyì ) followed by a target outcome, 成 is almost always required (e.g., 翻译成中文 - translate into Chinese; 改成 - change into).