Two plus two is five if Big Brother says so. Newspeak, which grows smaller each year, is the official language of the land. It shrinks and combines words, making speech choppy and plain. People speak in sentences devoid of independence and free thought using a purely functional dialect. The three countries in the world of 1984 are always at war, rotating allies and enemies.
History is changed for convenience, switching back and forth to suit the government.
The past is, shredded, re-written and forgotten. Once every scrap of the past is gone, no one can question whether it happened. We have always been at war with Eurasia. Entire armies clash in campaigns waged in distant, hostile lands. The people, working to fuel the war machine, keep churning out materials which are sent out to battles that no one sees or can verify.