Mastering ้–“ (aida): Expressing “While” or “During” in Japanese (JLPT N4 Grammar)

Japanese Grammar Template
Meaning & Usage

โœจ Basic Meaning

“While”, “during”, “in the meantime”

๐ŸŽฏ Primary Function

To indicate that an action or state continues throughout the entire duration of another action or state.

๐Ÿ“‹ Grammar Structure

[Verb Dictionary form/ใชใ„ form] ้–“ [ใ„-adjective] ้–“ [ใช-adjective] ใช ้–“ [Noun] ใฎ ้–“

๐ŸŽญ Usage Contexts

๐Ÿข Formal Situations

Used naturally in both formal and informal contexts. The politeness depends on the ending of the main verb/clause.

๐Ÿ˜Š Informal Situations

Very commonly used.

โœ๏ธ Written Language

Frequent in descriptive writing.

๐Ÿ—ฃ๏ธ Spoken Language

Very common in everyday conversation.

๐Ÿ’ก Common Applications

Describing a continuous action happening concurrently with another state or action.
Used when the action or state in the second clause takes place for the entire duration of the action or state in the first clause.
Example: ๅคไผ‘ใฟใฎ้–“ใ€ใšใฃใจๆ—ฅๆœฌ่ชžใ‚’ๅ‹‰ๅผทใ—ใพใ—ใŸใ€‚ (Natsuyasumi no aida, zutto Nihongo o benkyล shimashita. – I studied Japanese the whole time during the summer vacation.)
Describing a state that continues while another action or state is ongoing.
Similar to the above, emphasizing the continuity of a state (e.g., silence, being away) throughout a period.
Example: ๅ…ˆ็”ŸใŒ่ฉฑใ—ใฆใ„ใ‚‹้–“ใ€้™ใ‹ใซ่žใ„ใฆใใ ใ•ใ„ใ€‚ (Sensei ga hanashite iru aida, shizuka ni kiite kudasai. – Please listen quietly while the teacher is speaking.)
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๐Ÿ“Š
Frequency
Very high frequency in daily communication.
๐ŸŽš๏ธ
Difficulty
Intermediate (N4 level), especially differentiating from ้–“ใซ.
Example Sentences
ๆฏใŒ่ฒทใ„็‰ฉใซ่กŒใฃใฆใ„ใ‚‹้–“ใ€็งใฏๅฎถใงๆŽƒ้™คใ‚’ใ—ใฆใ„ใพใ—ใŸใ€‚
While my mother was out shopping, I was cleaning the house.
ๅญไพ›ใŒๅฏใฆใ„ใ‚‹้–“ใ€ๅคงไบบใฏใ‚†ใฃใใ‚Šไผ‘ใฟใพใ—ใŸใ€‚
While the children were sleeping, the adults relaxed slowly.
ใ“ใฎๆœฌใ‚’่ชญใ‚“ใงใ„ใ‚‹้–“ใ€ไป–ใฎใ“ใจใฏไฝ•ใ‚‚่€ƒใˆใ‚‰ใ‚Œใพใ›ใ‚“ใงใ—ใŸใ€‚
While I was reading this book, I couldn’t think about anything else.
Notes & Nuances

๐Ÿ“Œ Important Points

Emphasizes the entire duration
้–“ (aida) is typically used when the action or state in the second part of the sentence spans the *entire duration* of the action or state in the first part.
Example: ๅคไผ‘ใฟใฎ้–“ใ€ใšใฃใจ้›จใŒ้™ใฃใฆใ„ใพใ—ใŸใ€‚(Natsuyasumi no aida, zutto ame ga futte imashita. – It rained *the whole time* during the summer vacation.)
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โš ๏ธ Common Mistakes

โŒ Using ้–“ when the second action happens only at one point.
โœ… Use ้–“ใซ instead of ้–“.
้–“ is for actions/states continuing throughout the first clause’s duration. ้–“ใซ is for actions/states happening *at some point* during the first clause’s duration.
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๐Ÿ›๏ธ Cultural Context

Politeness Level: Neutral; politeness is determined by the main verb.
Social Situations: Used widely in various social contexts.
Regional Variations: None significant for this grammar pattern.

๐Ÿ” Subtle Differences

้–“ (aida) vs. ้–“ใซ (aida ni)
้–“: The second action/state continues throughout the duration of the first event. ้–“ใซ: A single action or change happens at some point within the duration of the first event.
When to use: Use ้–“ when the second action/state is continuous or spans the whole period. Use ้–“ใซ when the second action is a single, punctual event or a change of state within the period.
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๐Ÿ“ Conjugation Notes

Connects directly after the plain form of verbs (dictionary or ใชใ„ form), ใ„-adjectives, ใช-adjectives + ใช, and nouns + ใฎ.

๐Ÿ”Š Pronunciation Tips

Pronounced ใ‚ใ„ใ  (a-i-da). The pitch accent is typically flat.

๐Ÿง  Memory Tips

Think of ้–“ as a tunnel or bridge (representing the duration). If something is happening *continuously* inside the tunnel (like walking through it), use ้–“. If something happens *at a specific point* inside the tunnel (like seeing a specific sign), use ้–“ใซ.

Practice Exercises
ๅคไผ‘ใฟ๏ผฟ๏ผฟใ€ๅฎถๆ—ใจๆ—…่กŒใซ่กŒใใพใ—ใŸใ€‚
ใฎ้–“
ใฎ้–“ใซ
ใจ
ใซ
ๅ…ˆ็”Ÿใฎ่ฉฑใ—ใฆใ„ใ‚‹๏ผฟ๏ผฟใ€ใƒกใƒขใ‚’ๅ–ใ‚Šใพใ—ใŸใ€‚
้–“
้–“ใซ
ใจใ
ใชใŒใ‚‰
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