2ヶ月でこんなにできるなんてすごい


I posted on an app a self introduction message, and I mentioned that I'd been
studying Japanese for two months, one of the comments was this:

> 2ヶ月でこんなにできるなんてすごい！！

I get that the general idea is that she is impressed by my Japanese after only
two months of studying.

First question, am I right in assuming she is using で as a particle here? I
thought you only used it after locations. I've never heard of "dekonnani"
before.

Second question, is なんて a typo? Did she mean to say なんで?

A full sentence breakdown would be awesome.




> 「[2ヶ月]{にかげつ}でこんなにできるなんてすごい！！」

2ヶ月で = within two months

こんなに = like this, this much, to this extent This phrase functions adverbially
to modify the verb 「できる」.

できる = to be able to (use/speak/write Japanese)

なんて = 「なんて」 here introduces a topic/thing that is surprising or unexpected to
the speaker. Here, that topic/thing is your Japanese proficiency.

すごい = (it is) awesome

「なんて」 is a key word here and so is 「できる」.

