定语从句之关系副词关系副词有：when,where,why1.when分析句子成分：I will never forget the day when I joined the League.定语从句的翻译：April Fools Day is a day when people play jokes on friends愚人节是_人们可以和朋友开玩笑的日子。七月一日是（他出生的）日子。July 1st is the day when he was born_.1945年是(二战结束的) 时间。The year 1945 was the time when the Second World War was at an end. 我永远忘不了(第一次来深圳的)那一天。I will never forget the day when I first came to Shenzhenwhen 指时间，在从句中作时间状语，它的先行词为time, day, morning, night, week, year, moment,
