Does 你家孩子真多 follow the topic-comment pattern? I think the following sentence has the topic-comment structure, but I'm not entirely sure if there is another grammar principle underlying it that I'm not seeing. The sentence is:


  你家孩子真多！


I think the topic is 你家, with the rest being the comment. Is this right?
It’s a topic-comment structure, but exactly what the topic is is open to interpretation.

It might be “你家”.  In that case a rough English version would be:


  Your home – how many children there are here!


Or it could be “你家孩子” meaning:


  The children in your home – there are so many of them!


Which one to choose depends on context.  If you heard this spoken, there might be intonational clues, e.g. a pause after the topic.