は Announces the Topic
は (pronounced wa, never ha) does not mark a subject at all. It raises a signpost — this is what the sentence is about — and then says something about it. Read 私は not as I but as as for me: the person is on stage, and the sentence is about to comment on them. Every sentence below opens with that signpost.
What to notice: the topic can be a person, a thing, a day or a language — は simply frames it, and the rest of the sentence comments on the frame. English forces a choice between is, am, are; Japanese lets the frame do that work.
が Points at New Information
が is the pointer. Use it when the identity of the noun is itself the news — something the listener does not know yet. A phone rings; the sentence hands you the doer with が: 電話が鳴っています. Stories work the same way: characters get が the moment they first walk on stage, and switch to は once they are familiar.
What to notice: 田中さんが来ました answers a silent question — who came?. The same words with は, 田中さんは来ました, mean as for Tanaka (already our topic), he came. Same vocabulary, different spotlight.
Question Words Take が
Anything the sentence hunts for takes が — and so does the answer that names it. Question words like 誰, 何, どれ fill an unknown slot, and that slot is always marked with が, never は. The rule has no exceptions, which makes it a comfortable anchor: see a question word, write が.
は in Pairs Makes Contrast
は has a second personality: comparison. When two things each carry は in the same breath, the listener hears them weighed against each other — this one yes, that one no. Japanese does not need the word but to make the contrast audible; the pattern は…。でも、…は…。 states it, and a second は alone already implies it.
Fresh Scenes Take が
Perception takes が. When something enters the scene and you simply report it — rain starting, a bus arriving, a smell drifting from the kitchen — it is brand-new information, so が introduces it. Weather reports, news headlines and there is / there are sentences all live in this territory.
は and が in the Same Sentence
The deepest pattern of the lesson: both particles at once, each doing its own job. 象は鼻が長い — as for the elephant, the nose is long. The big frame (elephant) is announced with は; the small subject inside it (nose) gets が. Feelings and abilities follow the same shape: the person is the topic, and the thing they love, understand or are good at takes が.
は vs が Cheat Sheet
| Pattern | Meaning | Example |
|---|---|---|
| X は Y です | Announces the topic — as for X… | 私は学生です。 (わたしはがくせいです。) |
| X が + verb | Marks new information — who or what did it | 電話が鳴っています。 (でんわがなっています。) |
| 誰・何・どれ + が | Question words, and their answers, take が | 誰が来ますか。 (だれがきますか。) |
| X は…。でも、Y は…。 | Two は = a contrast | コーヒーは飲みます。 (コーヒーはのみます。でも、おちゃはのみません。) |
| は frame + が subject | Big frame outside, small subject inside | 象は鼻が長いです。 (ぞうははながながいです。) |
Tip: read は as wa the moment it works as a particle — the kana line confirms it: わたしは. If you catch yourself saying ha, slow down.
Tip: story logic: characters get が on first appearance and は forever after — exactly like a man becoming the man in English.
Tip: swap test: if as for… fits, choose は; if the sentence answers who or what, choose が.
Tip: two は in one breath means a contrast is coming — tune your ear for it.
Lesson Summary
は = the topic signpost
今日は寒いです。
Read it as: as for today…
が = the identifier
田中さんが来ました。
New information takes the pointer
Questions take が
誰が来ますか。
The question word — and its answer
は + が together
象は鼻が長いです。
Big frame, small subject