You usually use "only when" when you will do something after a task, for instance could say something like …
影片：句型：倒裝句 - only when, only if, only, not until, 直到~才~，英語文 > 主題式 > 文法 > 句型 > 句型結構。. 源自於：均一教 …
美 [ˈonli hwɛn] 释义. 只有当; 除非. 实用场景例句. 全部. The company's troubles started only when it diversified into new …
You can use either "only when" and "It was only when", both are very similarly used. However there is a subtle …
The followup answer from systemovich offers what one might call the "strict constructionist" (or "machine-applied") …
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