(1) 这几个结构意思差不多，都表示“(你是)怎样……的？(你)为什么……的？”。
- How came you to be there?
你是怎么在那里的？ - How came you to be up so early?
你怎么起得这么早？ - How came you to know him so well?
你怎么这么了解他？
＊以上是古体形式，现在一般说：
- How did you come to know him so well?
- How did it come that you quarreled?
你们怎么吵起来的？
(2) How come...? 现在常用在俗语里。
- How come/How comes it that you finished your work so soon?
你怎么这么快就完成了工作？ - How come you were there?
你是怎么在那里的？ - How come you're home so early?
你怎么这么早就回家了？
(3) How is it that等于why。
How is it that you are here? 此句的意思等于 Why are you here?
(4) How is it (that)与Why is it (that)是It is...that强势结构加疑问词how, why变来的，因此，语势较强。
- But how is it she does not think of herself?
可她为什么就不想想她自己呀？ - But why is it he doesn't like the film?
可他为什么不喜欢那部影片呢？ - A: How is it that he speaks Albanian?
他怎么会讲阿尔巴尼亚语呢？
B: He worked in a power plant in Albania for three years, and he had to talk to the people there in Albanian.
他在阿尔巴尼亚的一座发电厂工作了三年，他必须用阿尔巴尼亚语和当地人交谈。
