1984 by George Orwell. Written when 1984 was in the distant future, where Big Brother controlled everything.
Time travellers wife. The life of a man who is an unwilling time traveller. Not sci Fi but hard to explain without spoiling
The Good Earth by Pearl S Buck is my all time favourite book. Set in pre revolutionary china and basically the life of a typical farming family. Just a beautiful book. She won the Pulitzer prize for that book and the Nobel prize.
Oh, and one hundred years of solitude by Gabriel Garcia Marquez. Also hard to explain but about an isolated town in South America. He has an unusual writing style but brilliant book. He also got the Nobel prize