比 vs 还 (bǐ vs hái): comparison and intensification in Chinese
比 (bǐ) is the standard way to form comparisons ('A is more X than B'), while 还 (hái) inside the pattern 'A 比 B 还 + adjective' intensifies the comparison, meaning 'even more (surprisingly)'. Understanding that 比 is mandatory for the comparison structure and 还 adds a subjective sense of 'even more' is key to using them correctly.
In Chinese, 比 (bǐ) is the core preposition for making comparisons, forming the pattern 'A 比 B + adjective' to say 'A is more [adjective] than B'. The adverb 还 (hái) can be inserted after 比 in this pattern to create 'A 比 B 还 + adjective', which means 'A is even more [adjective] than B', often with an implication of surprise or exceeding expectations. Crucially, 还 cannot replace 比; it only intensifies a comparison that 比 has already established. The two words serve different grammatical roles: 比 is a preposition that introduces the standard of comparison, while 还 is an adverb that modifies the degree.
When to use each
Use 比 to directly compare two items in the structure 'A 比 B + adjective/verb'. It is the standard way to express that one thing has a higher degree than another. 比 is required whenever you want to say 'A is more X than B'.
Use 还 after 比 in the pattern 'A 比 B 还 + adjective' to emphasize that A is even more [adjective] than B, often with a sense of surprise or beyond what is expected. 还 cannot be used alone to make a comparison; it must follow 比. Note: 还 has other meanings (e.g., 'still', 'also')—do not confuse them.
The intensifier 还 in this pattern implies a subjective judgement that the degree is unexpectedly high, whereas 更 (gèng) is a more neutral 'even more' without the surprise connotation.
At a glance
| 比 | 还 | |
|---|---|---|
| Function | Introduces the standard of comparison (A is more X than B) | Intensifies the degree within an existing comparison (even more X than B) |
| Position in sentence | Between the two items being compared: A 比 B + adjective | After 比 and before the adjective: A 比 B 还 + adjective |
| Can be used alone? | Yes, 比 forms a comparison by itself | No, 还 alone cannot make a comparison; it must follow 比 in this context |
| Implied meaning | Neutral comparison of degree | Adds emphasis of 'even more' often with surprise or exceeding a norm |
| Negation | Use 没有 (méiyǒu) instead of 比: A 没有 B + adjective | Not used in negated comparisons; 还 never appears after 没有 |
Examples
- 比他比我高。Tā bǐ wǒ gāo.He is taller than me.Standard comparison using 比; 还 is not needed.
- 还他比我还高。Tā bǐ wǒ hái gāo.He is even taller than me (surprisingly so).Using 还 to emphasize the degree is unexpectedly high.
- 比这个城市比那个城市大。Zhège chéngshì bǐ nàge chéngshì dà.This city is bigger than that city.Neutral comparison.
- 还这个城市比那个城市还大。Zhège chéngshì bǐ nàge chéngshì hái dà.This city is even bigger than that city (to an unexpected degree).Intensifies the comparison, often implying the speaker finds it surprising.
- 还✗他还高。✗ Tā hái gāo.✗ He still tall. (Incorrect for comparison)Wrong usage: 还 alone cannot mean 'more than'. The correct version: 他比我高 or 他比我还高.
- 比她比我更聪明。Tā bǐ wǒ gèng cōngming.She is even more intelligent than me (neutral 'even more').Using 更 (gèng) instead of 还 for a neutral intensifier; both are correct but 还 adds surprise.
Common mistakes
- Using 还 alone to mean 'more than', e.g., '他还高' to say 'he is taller' — must use 比 or 比...还.
- Omitting 比 when making a comparison and using 还 incorrectly: '他还大' instead of '他比我大' or '他比我还大'.
- Confusing 还 (in this pattern) with 还 meaning 'still' (e.g., '他还在这里' = he is still here). Context disambiguates.
- Using 还 with 没有 in negated comparisons: 'A没有B还大' is wrong. Use only 'A没有B大'.
FAQ
- When do I use 比 vs 还 in comparisons?
- Use 比 for a basic comparison ('A is more X than B'). Add 还 after 比 to mean 'even more X than B', often with a sense of surprise. 比 is always required for the comparison structure; 还 only intensifies it.
- Can I use 还 instead of 比 to make a comparison?
- No. 还 by itself cannot establish a comparison. You need 比 to form 'A 比 B + adjective'. To add emphasis, use 'A 比 B 还 + adjective'.
- What's the difference between 比…还 and 比…更?
- Both mean 'even more', but 更 is neutral and objective, while 还 often carries a subjective tone of surprise or exceeding expectations. Example: '他比我更聪明' (he is even smarter) is neutral; '他比我还聪明' (he is even smarter than me) implies I already considered myself smart, so his intelligence is surprising.
- Does 还 in 'A比B还' mean 'still'?
- No. In this pattern, 还 means 'even more'. The 'still' meaning occurs when 还 is used with a verb, e.g., '他还吃' (he is still eating). The two uses are distinct and context-dependent.