How long does it take to learn english ?

Depends on how much you want to learn really, schools usually just make you learn all sorts of parts of the subject. Some that could be necessities and some that you would rarely use.

Explanation:

authors choose a genre based on their purpose. fiction works well for teaching a lesson, as in fables. however, presenting facts and opinions in nonfiction might be a better way to present information. when authors begin to write, they think about what they want the reader to understand or experience. while fiction may be the best genre for storytelling, nonfiction may be the most clear for sharing facts, so both genres have merits.