When I want to ask whether or not something I have is what I think it is, I can't figure out exactly what to say.
これは梅じゃないの? (Rising intonation)
Is this not a plum?
This isn't a plum, right?
How could I say something like
"This isn't a plum?!" (With a sense of surprise)
"Isn't this a plum?"
In my mind, the translation is "Aren't I dead?" I guess I don't know if I'm being semantic or not, sorry.