You want to credit one thing entirely to another: say that without the first, the second would not exist.
序 · The move
1Put the thing everything rests on after the first 沒有.Is X genuinely what Y depends on? If Y could still stand without X, this frame overstates it.
2Open the second clause with 就沒有 and name what falls with X.Does the second 沒有 sink Y, mirroring the first? Both halves carry 沒有 — a single negation breaks the frame.
3Keep the run one-directional: the base holds up the wall, not the wall the base.Read it backwards — would removing Y make X vanish? If it would, the dependence is mis-aimed; X must be the foundation.
例 · Examples
1沒有without / there'd be no (sinks the condition)他的指導guidance, instruction，就then (ties the second loss to the first)沒有這麼有創意creative, having creativity的點子idea。
Without his guidance, there'd be no such creative idea.
界 · Boundary
只有…才…
只有…才… states the necessary condition positively — only via X does Y come about. 沒有…就沒有… states the same necessity in the negative — strip X away and Y is gone. Same dependence, X named as the sole route vs X named as the thing Y cannot live without.
如果…就… is a neutral if/then about what would happen; another condition might give the same result. 沒有…就沒有… closes that off — it credits Y wholly to X, and mirrors the negation on both ends rather than running positive.
因為…所以… states X caused Y as plain fact. 沒有…就沒有… runs the counterfactual — it removes X to show Y collapses, weighting the debt Y owes X.
✗ 沒有他的指導，就有這麼有創意的點子。 → ✓ 沒有他的指導，就沒有這麼有創意的點子。 (the second clause must keep 沒有; both ends are negated)
✗ 不是他的指導，就沒有這個點子。 → ✓ 沒有他的指導，就沒有這個點子。 (the condition is existence/possession — 沒有, not 不是)
✗ 如果沒有他的指導，就沒有這個點子才對。 → ✓ 沒有他的指導，就沒有這個點子。 (沒有…就沒有… already carries the if; no extra 如果 or 才 needed)
English 'without X there'd be no Y' sets X off with one preposition and leaves Y plainly negated; learners drop the second 沒有 or reach for 不 on the condition, but Chinese mirrors 沒有 on both halves and negates existence, not a verb.