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既然 … ，就 … (since / now that)
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Since you're here
- Your friend drops by just as you are cooking dinner.
- since既然to come来(completed / change)了，then就in the same place一起to have a meal吃饭(suggestion)吧！ — "Since you're here, stay and eat with us!"
since既然 A，then就 B = since A (is a fact), B
- since既然 introduces a known fact; the second clause draws a conclusion or suggestion with then就.
- then就 goes after the subject: since既然you你not不well舒服，you你then就go home回家rest休息(suggestion)吧.
since既然you你not不well舒服，then就go home回家rest休息吧。
Complete: “Since you're ill, go home and rest.” ____你病了，就回家休息吧。
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既然 + known fact, 就 + suggestion.
Advice and decisions
- since既然you你already已经decided决定(completed / change)了，I我then就not不more多say说(completed / change)了。 — "Since you've already decided, I won't say any more."
- The second part is often a suggestion ((suggestion)吧), a decision or a question (why?为什么still / also还…？).
since既然you你already已经decided决定了，I我then就not不more多say说了。
Build: “Since you've decided, I won't say any more.”
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既然 + fact, subject + 就 + decision.
A fact both people know
- since既然 needs a fact that is already true and known; for a possibility use if如果: if如果you你to come来，… .
- Pair it with then就 (or that那 / still / also还), not so / therefore所以: since既然it's raining下雨(completed / change)了，we我们then就别去了.
Which sentence is correct?
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既然下雨了，我们就别去了 is right: 既然 pairs with 就 after the subject. 所以 does not pair with 既然, and 就 cannot come before 我们.
既然 is the right word for a situation that may or may not happen.
Difficulty 1/5 · 100 coins + a small bonus on first completion today
Possibilities take 如果; 既然 needs a known fact.
since既然 versus because因为
- because因为 explains why something happened: because因为it's raining下雨，competition (sports etc)比赛to cancel取消(completed / change)了.
- since既然 uses a fact to suggest what to do now: since既然it's raining下雨(completed / change)了，we我们then就to be at home在家watch看a film电影(suggestion)吧.
since既然it's raining下雨了，we我们then就at在home家watch看a film电影吧。
Recap
- since既然 A，(Subject) then就 B = since A (a known fact), then B (suggestion or decision).
- Not for possibilities (if如果); pairs with then就, not so / therefore所以.
Read the full reference: HSK 4 grammar — Cause & effect statements.
Your friend drops by just as you are cooking dinner. 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.