她意识到自己的钱包在火车上被人偷了。

她意识到自己的钱包在火车上被人偷了。

She realised her purse had been stolen while she was on the train.

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She realised her purse had been stolen while she was on the train.

had been stolen 是过去完成时被动语态(irregular),表示钱包「被偷」发生在她意识到之后(但偷的动作在此之前已经完成)。had 标记过去完成、been 标记被动、stolen 是 steal 的过去分词。

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