英文文法，分詞構句問題?

如何還原成原句?
Tours and concerts were canceled, which left musicians and fans disappointed.
逗號後面是關係從句(relative clause)，關代"which" 與前面整個主句關連起來(referring to the whole main clause)。
你列出的句子是原句關係從句的縮減，屬於分詞構句的一種。

怎樣譯 leaving musicians and fans disappointed ?
讓樂師和樂迷感到失望
(用被動語態去表達: musicians and fans were left feeling disappointed)
結構:  主句所表達的事情  "令" 受詞(樂師和樂迷) + 受詞補語(失望~adjective 或 感到失望~verbal phrase)

If participle construction  were deleted, then the original sentence should use adverb clause of time,reason etc.
eg:-When (they) musicians and fans heard the cancellation of tours&concerts--------adverb clause of time, reason, manner., being interrogative pronoun/adverb as subordinate clause.
--they were disappointed----------S+vt as main clause.are--->were
(1)It's time for fans to leave(leaving, pp--->leave vi) when the concert is cancelled.
(2)Fans are leaving for the cancellation of concert (tomorrow).
(3) "The concert can be left disappointed until the tour meets ( Or tours meet)", said the fans.
------leaving is pp for leave
-----can be left is passive;   leave--left--left. Hence The concert can be left disappointed if fans were turned down...
(4)To write the original with relative adverb, which, can be used to add more information
eg:- Concerts were cancelled, "which" left Fans disappointed.

這句後半是"分詞片語"，即用作將前句段的情況再作"描述/形容"或加以"評述"(這片語的用意)。

巡回音樂會被取消了....樂師和樂迷都實在失望 {leav(ing) disappointed中的leave若直譯成"留下"便變成不倫不類的中文意思}

重組成獨立句子：

Tours and concerts were canceled.  This left musicians and fans disappointed.
或改變主詞把兩句變成同樣結構：Musicians and fans were disappointed.
但這樣寫文便很"公式化"和很"悶"，只是說明或羅列事件而非描繪情況和表達感受。