"I could eat this fish sandwich."

Translation: Ich könnte dieses Fischsandwich essen.

[Sk8rMom]

While I do get it right every single time, I couldn't pinpoint the exact difference between "konnte" and "könnte."

[kyky]

"konnte" is past indicative and "könnte" is subjunctive (past)
http://en.wiktionary.org/wiki/k%C3%B6nnen#German

[Sk8rMom]

I'm a physicist. This sounds Greek to me... Thanks, though for trying...

[fritsvds]

Konnte is the normal past tense. Könnte is more like a possibility or philosophical statement. It's kinda like the difference between "when I was a teacher..." and "if I were a teacher..." One is past tense, the other is more a philosophical statement (which is named the subjunctive). It's hard to explain without using the "greek". Sorry, I hope you get it though!

[marziotta]

Is there any difference between "dies" and "dieses"?