How would you say "I got the time wrong" or "you got the time wrong"

Question

Cécile Janty-Davies · Accepted Answer

Hi Fee,
It would be' " Je me suis trompé(e) d'heure."
Hope this helps!

GENE WILLIAMS · Answer

Question: I'm confused as to why we use "de" in this expression rather than a definite article like "le" or "la". The expression doesn't use ne...pas, therefore isn't negative? Not sure. Please explain, thanks.

Cécile Janty-Davies · Answer

HI Gene, 
The verb 'se tromper de quelque chose' means to get something wrong so its sense is negative you don't need the ne...pas which would mean the opposite - not to get something wrong 
Take a look at this entry from the Larousse dictionary for more examples of its use-  
"se tromper verbe pronominal intransitif [commettre une erreur]    to make a mistake

se tromper dans une addition/dictée  = to get a sum/dictation wrong  
je me suis trompé de 11 euros  = I was 11 euros out (UK) OU off (US)  
je ne m'étais pas trompé de beaucoup =   I wasn't far wrong OU far off (US)

[prendre une chose pour une autre]  = to mistake one thing for another 
se tromper de jour  =  to get the day wrong

se tromper de bus  =  to get on the wrong bus"

Hope it helps!