how long与 how far有什么区别呢，回答时分别用什么

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between…and…,from…to…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

多长和多远，前者用来提问时间，后者提问距离