Sentence case is a style of writing where only the first letter of the first word in a sentence is capitalized, along with any proper nouns. For example, in the sentence "The cat is sleeping," only "The" is capitalized. This format is commonly used in everyday writing, including books, articles, and emails, as it enhances readability. In contrast to other capitalization styles, such as title case, where major words are capitalized, sentence case maintains a more straightforward approach. It is often preferred in professional and academic settings for clarity and simplicity, making it easier for readers to follow the text.