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由 … 做主 (for … to decide)
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Who gets to decide?
- Your parents ask what you want to study at university.
- this这to be / is是you你(modifier / structural particle)的life (one's time on earth)人生,by由you你oneself自己decide做主。 — "It's your life — it's up to you to decide."
by由 + person + decide做主 = for … to decide
- by由 X decide做主 = X has the right to decide: by由you你decide做主, by由father and mother父母decide做主.
- decide做主 = make the decision, be in charge.
this matter这件事by由you你decide做主。

Complete: “It's up to you.” 由你自己____。
Độ khó 1/5 · 100 xu + một phần thưởng nhỏ cho lần hoàn thành đầu tiên trong ngày
由 + person + 做主.
Who's in charge
- family家里(modifier / structural particle)的big matters大事all都by由Grandpa爷爷decide做主。 — "All the big family decisions are made by Grandpa."
- Asking: 这件matter事who谁decide做主? — "Who decides about this?"
family家里的big matters大事all都by由Grandpa爷爷decided做主。
Build: “Big family decisions are made by Grandpa.”
Độ khó 3/5 · 200 xu + một phần thưởng nhỏ cho lần hoàn thành đầu tiên trong ngày
Matter + 由 + person + 做主.
by由 marks the decider
- by由 + person comes before decide做主; the matter decided is the topic in front: 这件main content事由you你decide做主.
- Do not use (passive: by)被: (passive: by)被you你decide做主 is wrong.
被你做主 is correct.
Độ khó 1/5 · 100 xu + một phần thưởng nhỏ cho lần hoàn thành đầu tiên trong ngày
False. 由 marks who is responsible for a decision: 由你做主 “It's up to you.” 被 marks the passive and does not fit here.
decide做主 versus to decide (to do something)决定
- to decide (to do something)决定 = to decide (any decision): I我to decide (to do something)决定tomorrow明天to walk走.
- decide做主 = to have the authority to decide: I我can't make做不了the decision主 — "It's not my decision to make."
this matter这件事I我can't make做不了the decision主。
What does 我做不了主 mean?
Độ khó 1/5 · 100 xu + một phần thưởng nhỏ cho lần hoàn thành đầu tiên trong ngày
做不了主 = lack the authority.
Recap
- (Matter) + by由 + person + decide做主 = it's up to that person to decide.
- decide做主 = have the authority; can't make做不了the decision主 = not my call; to decide (to do something)决定 = decide.
Read the full reference: HSK 6 grammar — Sentence patterns.
Your parents ask what you want to study at university. Close the examples. Say a Mandarin response, then write it in Chinese. Explain briefly in English what the lesson’s pattern adds. Compare with the model, then change one detail and try again.
This is supported productive practice. Compare meaning and structure; your answer need not copy the model. A partner or teacher must hear the spoken response to comment on pronunciation.