在去日本之前，他从未尝过寿司。
He had never tried sushi until he visited Japan.
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never英 /ˈnevə/|美 /ˈnɛvər/
解释
never 是频度副词，插入 had 和 tried 之间，表示在某个过去时间点之前从未有过该经历。
He had never tried sushi until he visited Japan.
never 是频度副词，插入 had 和 tried 之间，表示在某个过去时间点之前从未有过该经历。