I tried typing New York, half-expecting it to be correct.
B.a.g.s why did they never teach me this in school!
How do you know whether to put the adjective before or after the noun? "Le chat noir" is correct, but "la pomme grosse" is not?
look at this, quite useful: http://french.about.com/od/grammar/a/adjectives_4.htm
why not grande?
An apple can be small or big = petite ou grosse.
Basically, "grande" means "tall".