たの at the end of 「そんなに寝ぼけるまで熟睡してたの？」


Could you help me with this sentence (it's from Attack on Titan)

> そんなに寝ぼけるまで熟睡【じゅくすい】して **たの** ？

そんな refers to the muttering he did earlier

まで probably doesn't mean "until", but rather "even"

So something like, "even half asleep, you do..."  
I'm just not sure how the 熟睡 part fits in, and how the ”たの” works.

I appreciate any help on that matter. Thanks :)




The previous sentence is Eren saying なんで、ここに... which can be translated to
"Why am I here?"

そんなに means "so", "so much". For the differences with こんなに and あんなに, see this :
[Why use あんなに instead of こんなに when expressing one's
memories?](https://japanese.stackexchange.com/questions/11824/why-
use-%E3%81%82%E3%82%93%E3%81%AA%E3%81%AB-instead-
of-%E3%81%93%E3%82%93%E3%81%AA%E3%81%AB-when-expressing-ones-
memories\(refering)

まで in this case means "to such an extent".

ねぼける means "to be half asleep" or "to act strangely, to be disoriented, to be
confused, to ramble, as if just waking up".

熟睡 means a deep sleep.

してた is a casual way of saying していた wich is just the past tense of the ている form
of する.

の? is a feminin way of saying のか。/のだ? which here combines a bit of surprise
and asking for explanation/confirmation about the situation you just
saw/heard, in this case, Eren not knowing where he is.

So the whole sentence means : "You were sleeping deeply enough to be _that_
confused?"




The previous sentence is Eren saying なんで、ここに... which can be translated to
"Why am I here?"

そんなに means "so", "so much". For the differences with こんなに and あんなに, see this :
[Why use あんなに instead of こんなに when expressing one's
memories?](https://japanese.stackexchange.com/questions/11824/why-
use-%E3%81%82%E3%82%93%E3%81%AA%E3%81%AB-instead-
of-%E3%81%93%E3%82%93%E3%81%AA%E3%81%AB-when-expressing-ones-
memories\(refering)

まで in this case means "to such an extent".

ねぼける means "to be half asleep" or "to act strangely, to be disoriented, to be
confused, to ramble, as if just waking up".

熟睡 means a deep sleep.

してた is a casual way of saying していた wich is just the past tense of the ている form
of する.

の? is a feminin way of saying のか。/のだ? which here combines a bit of surprise
and asking for explanation/confirmation about the situation you just
saw/heard, in this case, Eren not knowing where he is.

So the whole sentence means : "You were sleeping deeply enough to be _that_
confused?"

