Use of どうして　わかりましたか


`どうして わかりましたか。`

My teacher said this in a conversation and my brain translated it to _"Why did
you understand?"_ (which didn't make much sense given the context!) but I
think what she meant was _"How did you notice?"_.

The context:

Me: 先生{せんせい}は 犬{いぬ}が 好{す}きですね。

Her: はい、好{す}きです。どうして わかりましたか。

Am I understanding this correctly? If so, why did her question start with どうして
instead of どう?




Your teacher means 'Why did you know I like dogs?' `わかる` means different
things depending on context. Here it translates 'to know' as opposed to
'understand'.

As a language, Japanese is heavily tied to context. There are often different
translations of the same word to English depending on the context.




Your teacher means 'Why did you know I like dogs?' `わかる` means different
things depending on context. Here it translates 'to know' as opposed to
'understand'.

As a language, Japanese is heavily tied to context. There are often different
translations of the same word to English depending on the context.

