Japanese は vs が: The Real Difference Between Topic and Subject
Learn when to use は (wa) and が (ga) in Japanese. This elementary guide explains topic vs. subject with clear examples, a dialogue, and practice.
By TheaFirst conversations · Yapr Learn
Many learners hear that は marks the topic and が marks the subject, but that doesn't explain why 私は寿司が好きです uses both. The key is information structure: は sets the topic and often implies contrast or known information, while が introduces new information or identifies who or what does something. This lesson gives you a direct answer first, then concrete patterns and a dialogue so you can choose confidently in everyday sentences.
By the end, you can…
- explain the difference between は and が in simple Japanese sentences.
- choose は or が correctly when introducing myself, asking questions, and talking about likes.
Listen once. Try it slowly. Then say it without looking.
Checking available voices…
私は学生です。
I am a student.
Watashi wa gakusei desu.
Use は when you are talking about yourself as the topic. The focus is on what you are, not on who is the student.
私が学生です。
I am the student. (It's me who is the student.)
Watashi ga gakusei desu.
Use が when you are identifying who fits the description, often as an answer to 'Who is the student?'
寿司が好きです。
I like sushi.
Sushi ga suki desu.
Use が with 好き, 上手, ほしい, and similar words because the thing liked or wanted is marked by が.
田中さんは来ましたが、山田さんは来ませんでした。
Mr. Tanaka came, but Mr. Yamada did not come.
Tanaka-san wa kimashita ga, Yamada-san wa kimasen deshita.
Here は highlights contrast between two people. The second は makes the contrast clear.
誰が来ましたか。
Who came?
Dare ga kimashita ka.
Use が with question words like 誰, 何, どこ when they are the subject. The answer also uses が.
Pronunciation guides are approximate. Slow playback keeps the original pitch.
Make it make sense
Useful pattern
A simple way to think about it: は marks the topic you are talking about, and が marks the grammatical subject that does or is something. In 私は学生です, 私 is the topic and the sentence says about me that I am a student. In 私が学生です, が marks 私 as the subject and often answers 'Who is the student?' or emphasizes that it is me, not someone else. Another common pattern is は…が…, as in 私は寿司が好きです: は sets the topic (me), and が marks the object of the liking (sushi). This double-particle pattern is normal and useful.
When to use it
Use は when the information after it is new or when you are making a general statement about a known topic. Use が when the subject is new information, when you answer a question about who or what, or when you emphasize the subject. For example, if someone asks 誰が学生ですか, answer 私が学生です. If you simply want to introduce yourself, say 私は学生です. With question words like 誰, 何, どこ, use が: 誰が来ましたか. In negative contrast, は often appears: 田中さんは来ましたが、山田さんは来ませんでした. Both particles can be correct in the same sentence depending on what you want to focus on.
Listen to each line, then take one part and reply out loud.
すみません、田中さんはどこですか。
Excuse me, where is Mr. Tanaka?Sumimasen, Tanaka-san wa doko desu ka.田中さんはあそこです。あの眼鏡をかけている人が田中さんです。
Mr. Tanaka is over there. The person wearing glasses is Mr. Tanaka.Tanaka-san wa asoko desu. Ano megane o kakete iru hito ga Tanaka-san desu.ああ、あの人が田中さんですか。じゃあ、隣の人は誰ですか。
Oh, that person is Mr. Tanaka? Then who is the person next to him?Aa, ano hito ga Tanaka-san desu ka. Jaa, tonari no hito wa dare desu ka.隣の人は山田さんです。山田さんは田中さんの同僚です。
The person next to him is Mr. Yamada. Mr. Yamada is Mr. Tanaka's colleague.Tonari no hito wa Yamada-san desu. Yamada-san wa Tanaka-san no dōryō desu.A little context goes a long way
In Japanese conversation, は and が often signal what is already known versus what is new. Using が when answering a who-question sounds natural and helpful, while は can sound like you are changing the topic or making a contrast. There is no single rule that covers every case, so listen to how native speakers manage information flow in context.
One thing to watch for
Answering 誰が学生ですか with 私は学生です。
Try this instead: When the question uses が to ask who, the natural answer also uses が: 私が学生です。Using は here can sound like you are introducing yourself rather than answering the question, though it is not strictly ungrammatical in every context.
Your turn
Try answering out loud before checking a possible answer.
1Fill in the blank: 私＿学生です。 (You are introducing yourself.)
Show a sample answer
は
私は学生です is the natural way to introduce yourself. 私が学生です is also grammatical but would emphasize that you are the student, often as an answer to a who-question.
2Fill in the blank: 誰＿来ましたか。
Show a sample answer
が
Question words like 誰 take が when they are the subject. 誰は来ましたか is not used in this neutral question.
3Choose the better particle for 'I like sushi': 寿司＿好きです。
Show a sample answer
が
好き takes が for the thing liked. 寿司は好きです is possible if you are contrasting sushi with something else, but the neutral statement uses が.
Use は to set the topic and が to mark new or emphasized subjects. With 好き and question words, が is usually the natural choice.
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