Instrument / Mediator
Instrumental
Instrument
Means
With what or through what does it happen?
extended
intermediate
Scene core
意味
The tool, medium, body part, system, channel, or mediator used to perform or transmit the action.
見分け方
Ask what tool or channel makes the action possible.
例
単語
knife|phone|car|email|hand
フレーズ
with a knife|by email|through the app
文
He cut the bread with a knife.
Visual guide
Basic shape
Actor │ uses ▼ Instrument / mediator │ makes possible ▼ Action He cut bread with a knife.
Compare shape
Same role, different shapes: with a knife (preposition) knife-CASE (case ending) by email (medium) through the app (channel) hand + cut (bare/compound) Ask: with/through what?
言語別ビュー
母語では
Japanese
表れ方
strong
重要度
Instruments and means are commonly marked by で.
ナイフでパンを切った。
I cut bread with a knife.
学習中の言語では
Vietnamese (standard)
表れ方
strong
難易度
Means or instrument is commonly marked with bằng; route/medium may use qua or bằng.
Tôi viết bằng bút.
I write by pen
よくあるつまずき
Learners may use one English preposition pattern for many Vietnamese relation words.
Same block, different coding
Both languages use this block strongly, but they signal it differently. Focus on form changes, not only meaning.