根據grammar point · tier 1 · according to / on the basis of (根據 X，[claim])
· gēnjù
Names the source a following statement rests on; the claim is presented as grounded in it.
字源 FORM what the parts do
根 is a root under a tree (木), what a thing stands on. 據 is a hand (扌) braced on something, taking the weight. Together they name the ground a claim leans on; the source is set down first, the statement built on top.
故事 STORY a scene to remember it by
A root sunk deep, and a hand braced flat against it; the speaker leans his whole claim on that one footing.
字源記憶法
框 · Frame
根據 [source]，[claim grounded in it]
觸 · Trigger
You want to state something and name the source it rests on, so the claim arrives already grounded.
序 · The move
1Put 根據 at the head, before the source you are citing.Is what follows 根據 a source/basis (a report, rule, data), not the claim itself?
2Name the source, then close it with 「，」.Could the listener point to this source as where the claim comes from?
3State the grounded claim after the comma.Does the claim follow from the source rather than restate it?
例 · Examples
1根據on the basis of / according to氣象報告weather report (the cited source)，明天下午會will (prediction)下雨to rain。
According to the weather report, it will rain tomorrow afternoon.
根據 takes facts/evidence you reason from (根據資料判斷 — conclude from the data); 按照 takes a rule/plan you carry out to match it (按照規定辦 — do it the way the rules say). Base-on vs conform-to.
根據 cites the SOURCE a claim rests on (where it comes from); 因為 gives the CAUSE that makes something happen. A report grounds a prediction (根據); rain causes a cancellation (因為).