how old [英] [haʊ əʊld] [美] [haʊ old] [短语] 几岁 词频排名 3233/55435 学习人数 30034 难度等级 1/10 认知比例 93.19% 例句 How old is he? 他多大年纪? How old are you? 你几岁了? I am nine. How old are you? 我九岁了。你几岁了? 助记 联想 how old 几岁,多大年龄。how old are you ?你多大了?how often 多久一次,how soon 多久以后