Do you like fireworks on Independence Day? July fourth is Independence Day in the U.S. and fireworks are often displayed. The word “fireworks” is an example of how spelling does not determine pronunciation in English. “Work” is pronounced with a different vowel sound than the word “fork”, even though they are spelled the same. The word “work” is pronounced with “er” (as in “jerk”), whereas “fork” is pronounced with “or”.