いる or ある? The Line Is Not Living vs Non-living
When do I use いる and when do I use ある?
いる is for things that move on their own — people and animals. ある is for everything else. The common textbook phrasing "living things take いる" is close but wrong at the edges: plants are alive and still take ある (木があります), because they don't move by themselves.
What is the rule, precisely?
| Subject | Verb | Example |
|---|---|---|
| People | いる | 教室に学生がいます |
| Animals, insects, fish | いる | 動物園にパンダがいます |
| Plants, trees, flowers | ある | 庭に木があります |
| Objects, buildings | ある | 机の上に本があります |
| Events, appointments | ある | 明日、試験があります |
The test is not "is it alive" but "does it move by its own will". That single reframing removes the plant problem, which is where the textbook version fails first.
Why does the wrong one sound so wrong?
Because ある with an animal doesn't produce a strange sentence — it produces a different one. This is one of our N5 items:
この動物園にパンダ＿＿＿か。
Is there a panda in this zoo?
Choose がありますか and a Japanese speaker will read it as asking whether the zoo stocks pandas — as objects, the way a shop has stock. The sentence is grammatical, which is exactly why the mistake survives: nothing crashes, the meaning just quietly changes.
What about the hard cases?
These are the ones learners actually argue about, and where the "moves by itself" test earns its keep.
| Case | Usual choice | Why |
|---|---|---|
| Taxi waiting outside | タクシーがいる | You are thinking of the driver — an agent who can drive off |
| Taxi as a service | タクシーがある | You mean the option exists, not a specific vehicle |
| Bus timetable | バスがある | A scheduled service, not a moving agent |
| Robot / AI character | いる or ある | Both occur; いる treats it as an agent, and this is genuinely unsettled |
| A dead body | ある | It no longer moves by itself — a well-known and grim illustration of the rule |
If you want one habit that carries you through N5 and N4: decide whether the thing can choose to leave. If it can, いる.
Does the same split appear elsewhere?
Yes, and knowing that saves you memorising three more tables. The same animacy line runs through:
- 持っている vs ある for possession — 犬を飼っている (an animal you keep) vs 車がある
- います / あります in the polite existence questions above
- 〜がいる in expressions like 恋人がいる, where a person is the point
Frequently asked questions
Is 'living things take いる' just wrong?
It is a useful first approximation that fails on plants. Plants are alive and take ある. 'Moves under its own power' covers every N5 case correctly.
Which one do I use for a fish in a tank?
いる. A fish moves by itself, so 水槽に魚がいます. If you mean fish as food on the table, ある is natural.
Do I need this distinction for the JLPT?
Yes — it appears from N5 onward, both in grammar questions and inside reading passages, where picking the wrong verb changes what the sentence claims.
What this is based on
- Our dataOur N5 item q_gf_fill_g0019 puts がありますか, がいますか, がいませんか and がいましたか against each other for a panda in a zoo — the only item in the bank where ある and いる are offered as direct alternatives, which is how the confusion is isolated.Yatta! question bank, 14,035 items · checked 2026-08-11
- Dictionary居る (いる) is glossed as 'to be (of animate objects), to exist', explicitly marking animacy rather than life as the condition.Jisho — 居る · checked 2026-08-11
- OfficialN5 is defined as understanding basic Japanese including everyday expressions; existence sentences with います/あります fall inside that scope.JLPT official — Levels and linguistic competence · checked 2026-08-11