おきに means at intervals of; every. It is a JLPT N4 Japanese grammar pattern used to express the N4 idea of “every; at intervals of” in natural Japanese.
This grammar point often appears in conversation, written explanations, formal notices, and JLPT-style reading questions. If you want to express the N4 idea of “every; at intervals of” in natural Japanese, おきに is a useful pattern to learn after the N5 basics.
What does おきに mean?
Use おきに when you want to express the N4 idea of “every; at intervals of” in natural Japanese.
Natural translations include:
- repeated at intervals
- every
- every; at intervals of
The exact English translation changes with context. Focus on what the grammar point does in the sentence first, then choose the English phrase that sounds natural.
How to form おきに
Amount of time/distance + おきに
Examples of the pattern:
- Amount of time
- Amount of time/distance
- おきに
Pay attention to the word form before the pattern. Many JLPT N4 mistakes happen because the meaning is understood, but the grammar is attached to the wrong form.
When is おきに used?
Use おきに in situations like:
- explaining a condition, reason, decision, comparison, or time relationship
- making a sentence more specific than a basic N5 pattern
- understanding natural Japanese in conversation or reading
Tone and register:
- neutral unless the grammar itself is marked as casual, humble, honorific, or formal
- Common in daily speech, textbook examples, and JLPT N4 reading questions
おきに example sentences
- 一日おきに運動しています。 — I exercise every other day.
- 三時間おきに薬を飲んでください。 — Please take medicine every three hours.
- 一メートルおきに木があります。 — There is a tree every meter.
- 二週間おきに会議があります。 — There is a meeting every two weeks.
- 五分おきに電車が来ます。 — A train comes every five minutes.
Read the Japanese sentence first, then check the English translation. Try to notice what the grammar point contributes: condition, timing, limitation, possibility, decision, politeness, contrast, or emphasis.
Nuance of おきに
The key nuance is every; at intervals of in a sentence-specific context.
This matters because おきに may look simple in English, but the Japanese form tells you whether the speaker is describing a time, a condition, a decision, a possibility, a contrast, or a social relationship.
For example:
- In context, おきに helps make the sentence more precise than a direct English translation.
- Compared with ごとに, it has a different focus even when both patterns appear in similar sentences.
おきに vs ごとに
Both {jp} and {similar} can appear in related sentences, but they are different.
おきに:
- is the target JLPT N4 pattern in this lesson
- carries the specific nuance explained above
ごとに:
- is useful for comparison because learners often mix it up
- may use a different form, tone, or sentence focus
Quick contrast examples:
- Target pattern: 一日おきに運動しています。 — I exercise every other day.
- Related pattern with ごとに: compare the form and ask whether the sentence is about timing, condition, ability, decision, contrast, or politeness.
If you are unsure which one to use, identify the main job of the sentence before translating it into English.
Common mistakes with おきに
Watch out for these mistakes:
- Using it with the wrong verb, noun, or adjective form
- Confusing it with ごとに because the English translation can look similar
- Translating it too literally instead of reading the whole sentence context
A good study habit is to write one short sentence and then change only the grammar point. This makes the difference between similar patterns easier to feel.
Is おきに on the JLPT?
Yes. おきに is connected to JLPT N4 grammar in this blog.
That means learners should be able to:
- recognize it in reading
- understand its nuance in context
- use it in simple original sentences
For test preparation, do not only memorize the English gloss. Practice identifying the words around the grammar point, because JLPT questions often test structure and context together.
Practice questions for おきに
Try making your own sentences with these prompts:
- Write one sentence using the basic pattern.
- Change the sentence into polite or casual style if possible.
- Compare it with the related pattern from the comparison section.
Keep the sentences short at first. Once the form feels natural, add time words, places, reasons, or contrast to make the sentence more realistic.
Learn おきに with Kanjiru
If you want to review おきに together with kanji, vocabulary, and other JLPT N4 patterns, Kanjiru helps you practice Japanese in short, focused sessions.
Browse more lessons here: