> 
> 1. Я ви́жу **одного́ ма́льчика**. (I see one boy.)
> 2. Я ви́жу **два до́ма**. (I see two houses.)
> 3. Я ви́жу **двух ма́льчиков**. (I see two boys.)
> 
> 
> 

I often get confused with the cases. As far as I know, after "`видеть`", we need to use the *Accusative Case*. I really have difficulty understanding *the cases of the numbers and the nouns after them* in the above sentences. (what case are they and why?).