关于how long 与how far 的区别1.how long“多长”,询问动作在时间上所持续的长度.其答语部分或划线部分可能是：1）“for + 时间段”,有时可能没有介词for.如：-How long did he wait for you here?他在这儿等了你多久?- For two hours.两个小时.It took him 20 minutes to finish his homework.(对话线部分提问)How long did it take him to finish his homework?2）“since + 具体时间”,“since + 时间段 + ago”或者“since + 从句”.如：-How long are you feeling like this?像这样已经多久了?-Since last night.从昨晚到现在.3）表示时间的betweenand,fromto等介词短语.如：They were playing football from 9:00 to 10:00 yesterday.(对话线部分提问)How long were they playing football yesterday?另外,how long也可以询问某事物的具体长度.如：-How long is the desk?这张桌子有多长?-1.2 meters.1.2米.2.how far“多远”,询问路程、距离.如：How far is it from here to school?从这儿到学校有多远