が (ga) — Subject Marker & Exhaustive Listing
Marks the grammatical subject — who or what performs the action or is being described. It puts emphasis on the subject itself (new information, or the answer to a 'who/what' question). It is also the particle used with verbs of existence, ability, and desire.
Structure
[Subject] が [Predicate]
Examples
雨が降っています。
Ame ga futte imasu.
It is raining.
雨 (rain) が (subject) 降って (falling) います (continuous)
私がやります。
Watashi ga yarimasu.
I will do it (not anyone else).
が singles out 'I' as specifically the one who will do it (exhaustive/identifying)
犬が好きです。
Inu ga suki desu.
I like dogs.
好き (like), 嫌い (dislike), 欲しい (want) take が for their target
• Question Words: Question words as subjects (誰, 何, どこ) MUST take が, never は (e.g. 誰が来ましたか？). • Object Marking: Words of preference (好き/嫌い), desire (欲しい/たい), and ability (できる/分かる) take が, not を, for their target. • Subordinate Clauses: The subject inside a modifying clause ('the book [that I bought]') takes が: 私が買った本, never は. • Conjunction: が at the end of a clause means 'but' (行きますが… = I'll go, but…).
Commonly confused with
The JLPT rarely asks whether you recognise a pattern — it asks which of several similar patterns fits. These are the ones が is tested against.
vs は (topic marker)
が identifies/introduces the subject as new or contrastive information and keeps focus on it; は merely presents a known topic and shifts focus to the comment. Answers to 'who/what' questions take が.
vs を (direct object marker)
For transitive verbs the object takes を, but stative predicates of liking/ability/desire (好き, できる, 分かる, 欲しい) take が for what would be the English object: '日本語が分かる', not '日本語を分かる'.
More particles
- を (o) — Direct Object & Traversal
- に (ni) — Target, Time, and Existence Location
- で (de) — Context of Action (Location, Means, Condition)
- と (to) — And (Exhaustive), With, and Quotation
- か (ka) — Question, Or, and Uncertain Identity
- の (no) — Possession, Modification, & Nominalization
- も (mo) — Also, Too, Both/And, Emphasized Quantity
- から (kara) — Starting Point, Origin, & Reason
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