"Is this a train?"
Translation:Ez egy vonat?
If "ez egy vonat" and "ez vonat" are both translations, what's the difference between the two? When should I use "egy"?
There is no difference, you can use both, and both versions are being used i'd say about equally often in spoken hungarian
When we use ez, egy ,a or etc. I am confused a little bit due to prefixes. Thanks.