Why do we add S to some words but ES to others? And when a word ends with Y, how do we know whether to change the Y to I before adding the plural suffix? And why on earth does knife become knives? You can unravel these mysteries with six simple rules.
pensandmachine: Essay writing tip from my friend. pensandmachine: “Essay writing tip from my friend Theresa I asked my friend Theresa (who is majoring in philosophy) for tips on writing a philosophy essay and wrote down what she gave me.