Speaking in Social Interaction is an important aspect of daily speaking. The Speaking in Social Interaction book makes it easier for readers to communicate with others in social Interaction. For this reason, the book of Speaking in Social Interaction is intended to help readers. The book is written in easily includes examples and exercises. Therefore, the readers can easily understand the contents of the book. The author would like to thank the publisher, for the support in the proper and smooth completion of this book. I hope this book is useful for the readers. We are open to suggestions to the development of the next book.