Ongoing Action & Lasting State: 〜ている (アスペクト)

Master the double nature of 〜ている: durative verbs express active ongoing progress (reading, eating), while instantaneous verbs express lasting resultant states (married, knowing, living).

Unit 9· The Master Te-Form(Part 5 of 8)JLPTN5

Ongoing Action or Continuous State (〜ています)

is reading

hon o yonde imasu

I am reading a book.

Ongoing Action (読んでいる) vs Resultant State (開いている)

Micro-Shift

本を読んで(よんで)います。

Action actively underway right nowI am reading a book.

For durative verbs of action, 〜ている acts like English '-ing'.

Example Sentences

蝉(せみ)cicada が鳴(な)いているsinging
The cicada is singing
Word Details →
How it works
が (subject) marks 蝉(せみ) (cicada) as the subject — what is doing the action. The verb sits at the end in the 〜ている (ongoing) form: take the te-form 鳴いて(ないて) (singing) and add いる (is), which describes an action happening right now. So it means the cicada is singing, in progress.
妹(いもうと)little sister が泣(な)いているcrying
My little sister is crying
Word Details →

Mental Model: The Double Nature of 〜ている

The biggest trap for learners of Japanese is equating 〜ている directly with English “-ing”.

In Japanese, 〜ている splits into two completely different meanings depending on the inherent nature of the verb:

1. Ongoing Action in Progress (Durative Verbs / 継続動詞): Verbs that take place over time describe an action that is unfolding right now:
本を読んでいます。(ほんをよんでいます。) = “I am reading a book.”
ご飯を食べています。(ごはんをたべています。) = “I am eating a meal.”
公園を走っています。(こうえんをはしっています。) = “I am running in the park.”

2. Lasting Resultant State (Instantaneous Verbs / 瞬間動詞): Verbs of sudden change describe a change that occurred in a flash, but the subject remains frozen in the resulting state:
結婚しています。(けっこんしています。) = “I am married” (NOT “I am walking down the aisle right now”).
知っています。(しっています。) = “I know” (Acquired the information, still retain it).
東京に住んでいます。(とうきょうにすんでいます。) = “I live in Tokyo” (Moved there, currently reside there).
持っています。(もっています。) = “I own / have” (Took possession, currently holding it).
窓が開いています。(まどがあいています。) = “The window is open” (Was opened, remains open).

The Classic Foreigner Trap: 知っている vs 知りません

Pay special attention to the verb 知る(しる) (“to get to know”):

Positive: 知っています(しっています) (“I know / I am in the state of knowing”).
Negative: You must say 知りません(しりません) (“I do not know”).
Never say *知っていません! If you never acquired the knowledge in the first place, there is no resulting state to be in!

Conversational Contraction: Dropping the い

In natural everyday casual speech, the い inside 〜ている is almost universally swallowed:

何しているの？(なにしているの？) → 何してるの？(なにしてるの？) (“What are you doing?”)
知っているよ。(しっているよ。) → 知ってるよ。(しってるよ。) (“I know!”)
食べていない。(たべていない。) → 食べてない。(たべてない。) (“I haven't eaten.”).

Conjugation

Base form	Conjugated	Form
食べる	食べている	Durative verb: ongoing action (eating)
読む	読んでいる	Durative verb: ongoing action (reading)
知る	知っている	Instantaneous verb: resultant state (knows)
結婚する	結婚している	Instantaneous verb: resultant state (is married)

Conversation

In Dialogue

Kenji
今、何をしていますか。
What are you doing right now?
Yuki
日本語を勉強しています。
I am studying Japanese.

Tips and Common Traps

Hana· Key point
Action in progress vs Resultant state: Continuous verbs describe what's happening right now (本を読んでいる = reading a book). But instantaneous verbs describe a lasting state after the action finished!
Maru· Common trap
The resultant state trap! 死んでいる does NOT mean 'in the middle of dying' — it means 'is dead'! 太っている means 'is overweight' (not 'getting fat'). 結婚している means 'is married' (not 'currently at a wedding')!

Quick Check

今(いま)、昼(ひる)ご飯(はん)を___。Right now, I am eating lunch.

Which form expresses that you are currently eating lunch right now?