Aberrant instances of accusative case

[llz.livejournal.com]

Hi guys,

First a brief introduction. I started learning Russian and joined this community late in high school, around 2004, in the US where I'm from. Now I am doing a European Masters program in conference interpreting.. yes from Russian (and Spanish) into English :) I want to thank this community for all its help and give encouragement to everyone learning (which I still am!) I never thought I'd get to this point. The road to fluency is long, but you can do it!

Now down to business. There are some unusual forms of accusative case I never properly learned and not sure how to Google them:

Это их иллюзия, которая разбивается о реальную жизнь.
Они бьются головой об стену. (I recalled this from memory, might be wrong.)

I surmise that "о + (object in accusative case)" means beating against something but would like a more official explanation.

And:

У меня не с кем разговаривать под бокал вино.
Мы танцевали до утра под рок-музыку.

Here I can guess that "под + (object in accusative case)" loosely means "with the accompaniment of _____ setting the milieu"

I have another question about imperfect vs. perfect verbs but will save that for another post.

Thanks in advance.

Comments

[oryx_and_crake]

вино declines like any other word of this paradigm (вина, вину, вином, о вине etc.)