Breakdown of atarasii kuukiseizyouki wo kattara heya no kuuki ga kirei ni narimasita.
をwo
direct object particle
がga
subject particle
のno
possessive case particle
買うkau
to buy
新しいatarasii
new
なるnaru
to become
部屋heya
room
〜たら〜tara
conditional form
きれい にkirei ni
cleanly
空気kuuki
air
空気清浄機kuukiseizyouki
air purifier
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Questions & Answers about atarasii kuukiseizyouki wo kattara heya no kuuki ga kirei ni narimasita.
Why is there no subject like “I” or “we” in this sentence?
Japanese often omits the subject when it’s clear from context (this is called a “pro-drop” language). In 新しい空気清浄機を買ったら…, the speaker (“I”) is understood without being stated.
How does the conditional form 買ったら work here?
買ったら attaches to the past‐tense verb stem (買った) plus ら to form a conditional meaning “when/once/after I bought (it).” It implies that the buying actually happened and triggered the result in the main clause.
Could I use another conditional like 買うと or 買ってから instead of 買ったら?
Yes, but each has a different nuance:
- 買うと → “Whenever/if I buy (one), then (as a rule)…” (general or automatic result)
- 買ってから → “After buying (it) …” (pure sequence of events)
- 買ったら → “Once I bought it, then (and) …” (cause-and-effect for a specific past event)
Why is を used after 空気清浄機 instead of another particle?
買う is a transitive verb that takes a direct object. The particle を always marks that object (“the air purifier”) which is being bought.
Why is が used with 部屋の空気 instead of を or は?
The verb なる (“to become”) is intransitive; its subject is the thing that changes. Subjects of intransitive verbs take が. You could use は to mark topic (部屋の空気はきれいになりました), but が stresses the new or changed state.
Why is きれいに written with に instead of just きれい?
きれい is a na-adjective. To modify a verb like なる, you turn it into an adverb by adding に:
きれい → きれいに (cleanly/clean) → きれいになる (to become clean)
Why do we use なる instead of する for “clean” here?
なる expresses a change of state (to become something). する would mean “to do/make” something. Since the air itself changed into a clean state, なる is the correct choice.
What role does の play in 部屋の空気?
The particle の links two nouns to show a relationship or possession. 部屋の空気 literally means “the air of the room” (i.e. room’s air).
What does 空気清浄機 mean, and how is it built?
It’s a compound of three parts:
- 空気 (くうき) = air
- 清浄 (せいじょう) = purification/cleaning
- 機 (き) = machine
Together, 空気清浄機 means “air purification machine,” or simply “air purifier.”