英文翻译How often do you go for a picnic。把句子进行汉英对比,多久一次How often;野餐go on a picnic。句子的时态是一般现在时态。表达的是经常性动作用一般现在时,how often多久一次,询问频率,后加一般疑问句语序,主语you,借助于do构成一般疑问句,go for apicnic去野餐,每月三次用three times a month,不到也就是少于用less than,故答案是Howoftendoyougoforapicnic?Less than three times a month.