JLPT Grammar Deck - Japanese Grammar Flashcards

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JLPT N3 Grammar

ことになっている

N3Rule

N3 · Rule · verb辞书形/ない形 + ことになっている

Meaning

it is arranged that; it is a rule that

Structure

verb辞书形/ない形 + ことになっている

Explanation

Shows something that has been decided by a rule, agreement, system, or arrangement, rather than a personal temporary decision.

Usage

Common in schools, companies, reservations, systems, contracts, and similar contexts.

Example

この寮では、夜十時以降は静かにすることになっています。

In this dorm, residents are expected to be quiet after 10 p.m.

Common Mistake

Use ことにする for a personal decision just made; use ことになっている for an established rule or arrangement.

Memory Tip

なっている shows that the rule has been established and remains in effect.

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