The document discusses the hard and soft sounds of the letters 'c' and 'g' in English pronunciation. It explains that 'c' makes a soft 's' sound when followed by 'e', 'i', or 'y', and a hard 'k' sound otherwise. Similarly, 'g' is soft ('j' sound) when followed by 'e', 'i', or 'y', and hard ('g' sound) otherwise. There are some exceptions to these rules. The document provides examples of words that illustrate the hard and soft sounds of 'c' and 'g' and encourages additional practice to learn the rules.