"How long"与 “How often"的用法区别

how long、how soon、how often区别与联系. A.How often B.How far C.How long D.How soon的区别与用法 how often 与 how soon啥区别how long 和how soon呢? how long与how soon有什么区别 How long与 “How often的用法区别 how many times 与how long 的区别 how many times与how long能否互换? HOW far,How heavy,How much,How long,How often how soon,how far ,how long区分 How ofter与How long与How 具体点,用法也可以 How long与How soon,How often的主要区别是什么? how long与how soon,how ofen 各有什么含义及用法 How long have you been skating?与How long did you skate?的区别 how long have you done与how long have you been的区别 How long are you staying 与How long do you stay的区别? How long怎么回答 How long is it? how long 同义词是什么