The document outlines 8 plural rules in English: 1. Most words form the plural by adding 's'. 2. Words ending in 'ch', 'sh', 's', 'ss', 'x' or 'z' add 'es'. 3. Words ending in a consonant + 'y' change the 'y' to 'i' and add 'es'. 4. Words ending in 'ay', 'ey', 'iy', 'oy', or 'uy' add 's'. 5. Words ending in 'f' or 'fe' change to 'v' and add 'es'. 6. Words ending in a consonant + 'o' add 'es