Children, when companys (company)by their parents ,are allowed to enter the stadium.说明原因
companied by their parents 由他们的父母陪着。
companied 走过去分词,表
示被动,when companied by... 是省去了主谓语,主语是句子的主语children, 谓语是系动词are
when (the children are) companied by their parents, 整个是个时间状语。
整个句子的汉义:孩子在有父母陪同时允许进入体育场。
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