Let's have a discussion about は vs が

[-悪魔-]

Is there a definite "rule" of when you are suppose to use the two? I kind of instinctively know when to use が instead of は but sometimes I'm not sure... and I'm still not quite sure about what exactly the difference is between the two.

So let's have a full blow out discussion about this.

 

[Glenn]

は is an information structure marker, and が is a case particle. Check these out:

Particles
Re: Topic and Case
Re: I have
topic and focus

 

[mdchachi]

Check previous threads too.
Help me with ga and wa and o | Japan Forum
Ga and Wa, what the...? | Japan Forum
particles - ni, ga, o (wo) | Japan Forum
ga and o particles | Japan Forum