"Th" is a digraph in the English language, which means it consists of two letters that together represent a single sound. It is commonly found in words like the, this, and that. The sound it makes can be voiced, as in the, or voiceless, as in think. This unique sound is important for clear communication in English. In addition to its role in pronunciation, "Th" is also significant in grammar. It helps form definite articles, such as the, which specify particular nouns. Understanding how to use "Th" correctly can enhance both speaking and writing skills, making it easier to convey ideas effectively.