the how of it - как это делается
How do you do? - Как поживаете?
How funny! - Как забавно!
as how: that
how so?: how is it so? why?
I don't know how/what: You use I don't know in expressions which indicate criticism of someone's behaviour . For example, if you say that you do not know how someone can do something, you mean that you cannot understand or accept them doing it.
how stupid/lucky can you get: You can say, for example, ' How lucky can you get ? ' or ' How stupid can you get? ' to show your surprise that anyone could be as lucky or stupid as the person that you are talking about.
which way/how the wind is blowing: If you realize or find out which way the wind is blowing or how the wind is blowing, you realize or find out what is likely to happen, for example whether something is likely to succeed .
sb wasn't to know/how was sb to know: You can say ' How was I to know ? ', or in British English ' I wasn't to know ', to mean that you cannot be blamed or criticized for something you did, because you did not have enough information to realize that it was wrong .