也 vs 还 (yě vs hái): additive adverbs “also” and “in addition”
也 (yě) means “also” or “too” and is used to say that the same predicate applies to a new subject or that a subject does the same action as another. 还 (hái) means “in addition” or “moreover” and usually adds a new predicate for the same subject, but it can also add a cumulative fact about a different subject when the discourse adds extra information. The choice depends on whether you are emphasizing parallelism (也) or addition (还).
也 and 还 both translate to “also” in English, but they serve different functions. 也 marks parallelism: it says the same action or state applies to another subject (e.g., “I like coffee, and she likes coffee too”) or that one subject does the same thing as another. 还 marks addition: it adds a new action or item, typically for the same subject (e.g., “I ate apples and also ate bananas”), but it can also add a cumulative fact about a different subject when the new clause provides extra, often contrasting, information (e.g., “He bought a house, and I also bought a car”). The main rule is that 也 is for “likewise” while 还 is for “moreover / in addition”.
When to use each
Use 也 when you want to say that a predicate (verb phrase) that applies to one subject also applies to another subject, or that one subject does the same action as another. It often appears in constructions like 'A 做 X, B 也做 X' (A does X, B does X too). 也 can also be used for the same subject when the meaning is 'as well' in a parallel sense (e.g., '他也会说英语' – He can also speak English, implying in addition to something else).
也 often carries a nuance of symmetry or shared quality between the subjects. In negative sentences, 也 can mean 'neither' (e.g., '我也不想去' – I don't want to go either).
Use 还 to add another action, item, or fact to an already stated one. It is most common with the same subject adding a new predicate (e.g., '我吃了苹果，还吃了香蕉' – I ate apples and also ate bananas). 还 can also be used with a different subject when the second clause presents additional information that is cumulative or contrasting (e.g., '他买了房子，我还买了车' – He bought a house, and I (in addition) bought a car). In such cases, 还 still functions as an additive adverb, not a parallel 'too'.
还 has other meanings (still, yet, even), but in the additive sense it always implies one more thing beyond what has been mentioned. It cannot be used to replace 也 in a pure 'likewise' context (e.g., '他喜欢茶，我也喜欢茶' – not 还).
At a glance
| 也 | 还 | |
|---|---|---|
| Core meaning | Likewise (same predicate applies to another subject) | In addition (add new predicate or item) |
| Typical subject pattern | Often different subjects sharing one predicate | Often same subject with another predicate |
| Can appear with different subjects and a new predicate? | Yes (parallelism: A does X, B does X too) | Yes, but only when the second clause adds a cumulative fact to the discourse (e.g., 'I did X, and you did Y in addition') |
| Word order | Subject + 也 + Verb (etc.) | Subject + 还 + Verb (etc.) |
| Negative equivalent | 也不 (also not / neither) | 还不 (usually 'still not' or 'not yet'; additive negative rare) |
Examples
- 也他是老师，我也是老师。Tā shì lǎoshī, wǒ yě shì lǎoshī.He is a teacher, and I am also a teacher.Same predicate (being a teacher) applies to different subjects – 也 is used.
- 还我吃苹果，还吃香蕉。Wǒ chī píngguǒ, hái chī xiāngjiāo.I eat apples and also eat bananas.Same subject adds another action – 还 is appropriate.
- 还他买了房子，我还买了车。Tā mǎi le fángzi, wǒ hái mǎi le chē.He bought a house, and I also bought a car (in addition).Different subject, but 还 adds a cumulative fact – valid usage.
- 也我不喜欢咖啡，她也不喜欢。Wǒ bù xǐhuān kāfēi, tā yě bù xǐhuān.I don't like coffee, and she doesn't either.Negative parallel – 也 used for 'neither'.
- 还我们吃了晚饭，还看了电影。Wǒmen chī le wǎnfàn, hái kàn le diànyǐng.We had dinner and also watched a movie.Same subject adds another activity – 还.
- 也他吃苹果，他也吃香蕉。Tā chī píngguǒ, tā yě chī xiāngjiāo.He eats apples and also eats bananas.Same subject, but 也 here implies 'as well' – possible, though 还 is more common for addition. 也 feels more like saying 'in the same manner'.
Common mistakes
- Using 还 for a different subject when the meaning is 'too' with the same predicate: '他喜欢茶，还喜欢咖啡' means 'He likes tea and also likes coffee' (same subject). For different subjects (e.g., 'He likes tea, I also like tea'), use 也.
- Using 也 instead of 还 to add a new action for the same subject: '我吃了苹果，也吃了香蕉' is acceptable but may sound like you are emphasizing the shared predicate rather than addition; 还 is more natural for simple addition.
- Putting 还 before the subject: '还我吃香蕉' is incorrect. 还 must follow the subject: '我还吃香蕉'.
- Confusing 还 with 也 in negative sentences: '他也不去' means 'He is also not going' (neither), while '他还不去' means 'He still isn't going' (different meaning). Use 也 for 'neither'.
FAQ
- When do I use 也 vs 还?
- Use 也 when you mean 'too' or 'as well' for the same predicate, often with a different subject (e.g., '你去了，我也去了' – 'You went, I went too'). Use 还 when you want to add another action or item, typically for the same subject (e.g., '我去了公园，还去了商店' – 'I went to the park and also went to the store'). 还 can appear with a different subject when the second clause adds extra cumulative information.
- Can 还 be used with a different subject?
- Yes, but only when the second clause provides additional, often contrasting, information to the discourse. For example, '他喝啤酒，我还喝红酒' – 'He drinks beer, and I (in addition) drink red wine.' This is correct because it adds a new fact, not a parallel 'too'. For a pure 'likewise' meaning with the same predicate, you must use 也.
- Is it wrong to say '我吃了苹果，也吃了香蕉'?
- It is not wrong, but it emphasizes that the same subject does both actions in a parallel sense (like 'I ate apples and I also ate bananas'). However, for simple addition without emphasis on parallelism, 还 is more natural. Both are grammatically correct; the choice depends on nuance.
- How do I express 'neither' or 'also not'?
- Use 也 in negative sentences: '他不喜欢咖啡，我也不喜欢' (He doesn't like coffee, I don't either). 还 in negative sentences usually means 'still not' (e.g., '他还没来' – He hasn't come yet), not 'neither'.