由 + Person + Verb (done by)
"Handled by…"
- to follow由 + Person + Verb = "(to be done) by someone" — who's responsible.
- 这件main content事由I / me我to be responsible for负责 = "I'm in charge of this."
- to follow由 assigns the doer of a task.
to follow由 + Person + Verb
- to follow由 names who carries out (or is responsible for) the action.
this这(measure word)件matter事by由me我be in charge负责。
- 这件main content事由I / me我to be responsible for负责 = "I'm responsible for this."
Practice
I'm responsible for this: 这件事 ____ 我负责。
由 + Person + Verb = done by: 这件事由我负责.
Practice
What does 由 assign?
由 + Person names the doer: 由专家决定 (decided by experts).
Formal assignment
- to follow由 is common in formal / official contexts: to follow由expert专家to decide (to do something)决定 (decided by experts).
Explore
Correct or broken?
由 hands the duty to a person: 由 + person + verb = it's on them.
Practice
由 is common in formal / official contexts.
Yes — 由…负责, 由…决定, 由…主持.
Recap
Key idea
- to follow由 + Person + Verb — "(done / handled) by …"
- 这件main content事由I / me我to be responsible for负责
- Assigns the doer; formal register
Read the full reference: HSK 4 grammar — Verb phrases.