因此grammar point · tier 1 · 因此 therefore (for this reason)
· yīncǐ
Therefore: a fact already stated is taken as the cause, and the consequence follows from it.
字源 FORM what the parts do
因 lies a person (大) on a mat (囗): what you rest on, the cause a matter rests on. 此 stops a foot (止) where a person (匕) stands, pointing back to the spot. Together: resting on this — for this reason.
故事 STORY a scene to remember it by
A claim lies flat on the mat; 此 plants its foot on the claim and swings the next line out as its result.
字源自撰記憶法
框 · Frame
[fact stated]，因此 [consequence]
觸 · Trigger
A fact is already on the table; you point back to it and state the result it caused.
序 · The move
1State the cause as a finished fact in its own clause.Is the cause complete before 因此, so 因此 can point back to it?
2Open the next clause with 因此, then give the consequence.Does 因此 lead a result, not a reason?
3Leave the cause clause un-marked.Did you avoid adding 因為 in front — 因此 already carries 'for this reason'?
例 · Examples
1這家麵店參加牛肉麵比賽得了第一名，因此therefore (for this reason)吸引to attract, draw in了更多顧客customer。
This noodle shop entered the beef-noodle contest and took first place, and therefore drew in more customers.
因為…所以… brackets the cause clause and the effect clause with a marker on each side. 因此 marks only the result clause and leaves the cause clause bare, leaning on a fact already finished.
所以 leads the result clause after a 因為 cause and runs more conversational. 因此 also leads the result clause but stands without 因為, runs more written, and points back at the stated fact.
因為下雨，因此我沒去。 → 因為下雨，所以我沒去。 (因此 does not pair after 因為; use 所以, or drop 因為 and let 因此 carry it)
因此下雨，我沒去。 → 下雨了，因此我沒去。 (因此 leads the result, not the cause)
English 'therefore' can sit mid-sentence after a comma with no prior cause spelled out; 因此 needs the cause stated as its own clause first.