# が (ga): subject marker and the wa vs ga trap

> How が marks the grammatical subject, why it's mandatory with certain verbs (好き, ある, 分かる), and how to choose between は and が.

- Page: https://www.darumoji.com/en/guide/japanese-particle-ga
- Content written by Darumoji: https://www.darumoji.com
- Published 2026-05-10

が marks the **strict grammatical subject**. Critical difference with は: は says "here's what we're talking about", が says "here's who does the action or holds the quality".

**が (ga)**: Marks the strict grammatical subject

## Its base function

`が` introduces the subject, **especially when it's new info** or the answer to a "who/what" question.

> 雨が降っています。
>
> あめ ga ふって います。
>
> It's raining (rain is falling).

The focus is on what's falling: it's **rain**, not snow.

> 何がありますか？
>
> なに ga ありますか？
>
> What is there?

With **"who/what" questions, always が**, never は.

## Verbs and adjectives that require が

Some verbs and adjectives force their complement to be marked by `が`, not `を`. Memorize as a block:

- **ある / いる**: Existence (objects / living beings).
- **分かる (わかる)**: To understand, to know.
- **できる**: To be able, to know how to.
- **好き (すき) / 嫌い (きらい)**: To like / to dislike.
- **上手 (じょうず) / 下手 (へた)**: Good at / bad at.
- **欲しい (ほしい)**: To want, to desire.

> 日本語が分かります。
>
> にほんご ga わかります。
>
> I understand Japanese.

You say `日本語が分かる`, **never** `日本語を分かる`. Hard rule.

## The classic trap: は vs が

- **私は田中です。 (わたし は たなか です)**: **"As for me, I am Tanaka."** Standard introduction. The topic (`私`, わたし) is the frame, we comment on who I am.
- **私が田中です。 (わたし が たなか です)**: **"I am Tanaka."** Out of a group, I'm the one named Tanaka. Answer to "who is Tanaka?".

> **The rule that works** **は = known topic** (old info, shared frame). **が = new or exclusive info** (answer to a question, first introduction of a subject). When in doubt, ask: *is this info new to my listener?* If yes, `が`. If no, `は`.

- [Wa vs ga: the difference, finally clear](https://www.darumoji.com/en/guide/wa-vs-ga.md)

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## を (wo): the direct object, and the second particle with a twisted pronunciation.

- [Continue with を](https://www.darumoji.com/en/guide/japanese-particle-wo)