Best explanation I’ve ever heard in 15+ years for the difference between は and が.

1 comment

1. Tl;Dw

   A good way to conceptualize it is this:

   Ha introduces something as the topic.

   わたしはせがたかいです。
   は = *I don’t know about everyone else*, but as for me I am tall.

   Ga identifies which of the options is correct

   わたしがせがたかいです。
   が = *Forget everyone else. out of all options available,* I am the one that is tall.

   (Yes, you can have two ga’s in a sentence)