高中语法精华总结.doc

复数形式规则1单复数词形相同 如: people, fish, Chinese(某国人), spacecraft, means, series, species，sheep, deer, aircraft等2外来词保留了原来的复数形式, 这一点需要重点掌握, 如: basis-bases analysis-analyses crisis-crises medium(媒体)-media datum(数据)-data curriculum(课程)-curricula larva(幼虫)-larvae criterion(标准)-criteria phenomenon(现象)-phenomena3通常只以复数形式出现的词语, 如: clothes trousers compasses(圆规) scales(天平)