2. 疑问副词：
(1) how 问情况、方式、程度等，如：
How do you go to school? 你是怎么上学的？
How do work out the problem? 你是如何算出这道习题的？
注意具有特殊意义的疑问句
How do you do? 你好吗？(初次见面用语)
How are you? 你好吗？(熟悉人之间的问候语)
How is your father? 你父亲好吗？(询问他人情况)
How do you like sth. / sb. ? / How do you find sth. / sb. ? 你认为某人或某东西怎么样？相当于What do you think about sb. / sth.
How can I get there? 我怎么去那儿？
How old are you? 你多大了？
How far is it from here to your school? 从这儿到你学校有多远？
How much is five and three? 五加三等于几？
How much is a kilo of pork? 一公斤猪肉多少钱？
How long is it? 它有多长？
How long will you stay there? 你讲在那儿呆多久？
How soon will you come back? 你过多就回来？
How often do you have a sports class? 你每隔多久上一次体育课。
(2) when 问时间，如(from www.hxen.com)：
When will you come here again？你什么时候再来？
(3) where 问地点、处所，如：
Where will you spend your holiday this summer? 今年夏天到哪里去度假？
(4) why 问原因，如：
Why do you not believe me? 你为什么不相信我呀？