作副词 ad.
1.(指方式、方法)怎样,怎么
How did you go to school
你是如何上学的?
2.(指健康等情况)怎样
How is Mrs.right?
怀特太太身体好吗?
3.(指数量、程度)多少
How many students are there in shool?
你学校有多少学生?
4.(表感叹)多么
How time flys!
时间过得太快了
5.(通常于can连用)(表理由)为何
How can you do such a thing to her?
你怎么能对她做出这种事来?
连接词 conj.
1.(用于间接陈述中,意义和作用与that相仿)
This is how we meet.
我们就是这样认识的.
2.【口】=however
名词 n.
1.方法,做法[the S]
The book tells you about the how and the why of math 这本书告诉你数学的方法和原理.