"He and my father are brothers."

Translation: Lui et mon père sont frères.

[jmulqueen]

Why can this not be "Il et mon père..." is it when you split up subjects like this you have to use moi, toi, lui?

[diacagr]

I think it is because we are talking about a indirect object. qui? lui

[JeandAlembert]

I found it. About.com says disjunctive or stressed pronouns are used when a sentence has more than one subject or object:

<pre>Michel et moi jouons au tennis. Michael and I are playing tennis. </pre>

http://french.about.com/od/grammar/a/pronouns_stressed.htm

[arrozfromage]

I'm wondering why the possible answers are "...et lui sont des freres" or "... et mon pere sont freres." Why des for one but not the other?