can i it count ??

do you know egg??

maybe we'll are say "egg" but it is not correct

we have to say "an egg"

example

one

나 사과 먹었어

i ate an apple , i ate apples

in korean , we don't count this setence apple , but if you use english you have to count apple

two

do you have a car?
do you have cars?

three

a building is tall
buildings are tall

is a building tall
are buildings tall