Why is "They are big." not correct?
we use larg/largă/largi usually when we are reffering to width. pantalonii sunt largi - the pants are large (in width)
or stradă largă - wide street
sticla are gura larga - the bottle has a wide mouth
what's the difference between Mare and Largi?
Mare is often used as big, largi is often used as wide
Do we pronounce the "i" in "largi" and in other words like this?
As you probably know it by now, it changes the pronunciation of c and g in general. At the end of words, "i" is not fully pronounced, it's like an unvoiced semivowel, like a very short "y" that's sometimes hard to hear
W I D E