what makes english grammer so hard

example #1:
Its = belonging to it. “The frying pan has a dent in its handle.”
It’s = it is. “It’s not my fault the frying pan is dented!”


Example  #2:In fact, almost any adjective can be used as a noun, just put “the” in front of it: “The dead shall walk the earth.” And any noun can be used as a verb, like in the famous example, “I’ll cookie you!”

example #3:.The verb-adverb combination is peculiar to English, as illustrated by constructions such as "turn on," "turn off," "mark up," or "mark down".