摘要：till, until作为介词式从属连词引导时间状语短语或状语从句.用于否定句时.结构为not -until .主句谓语动词延续与非延续皆可.意为“直到-才- .用于肯定句时.只与延续性动词连用.表示“到-为止 .例如:They played volleyball until it got dark./ They didn’t talkuntil the interpretercame./ He didn’t go to beduntil the his father came back.,until可以放在句首.till则不行.例如:Until the last minute of the match we kept on playing./ Not until he finished his work did he go home.,till, until只用于时间.以下句子是错误的:We walked till the edge of the forest..

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