直到会议结束后，他们才意识到自己没有被提前告知这个决定。
They realized after the meeting that they hadn't been told about the decision beforehand.
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hadn't英 /ˈhædnt/|美 /ˈhædnt/
been英 /biːn/|美 /bɪn/
told英 /təʊld/|美 /toʊld/
解释
hadn't been told 是过去完成时被动否定。hadn't = had not 缩合式，been told 构成被动语态，整体表示「在意识到之前未被提前告知」。
They realized after the meeting that they hadn't been told about the decision beforehand.
hadn't been told 是过去完成时被动否定。hadn't = had not 缩合式，been told 构成被动语态，整体表示「在意识到之前未被提前告知」。