Lets Speak Business Communication Skill is a comprehensive instructional manual designed by Dr. Antonius, S.S., M.Si. specifically for Business Administration students. Aimed at elementary to pre-intermediate learners, this textbook adopts a communicative approach to bridge the gap between theoretical English and its practical application in the professional world. The material covers a wide spectrum of essential business competencies, including: Business Correspondence: Mastering the You Attitude in professional writing to create effective business letters and messages. Professional Ethics: Understanding the role of ethics in leadership, employee behavior, and computer usage in the workplace. Oral Communication: Developing confidence in handling telephone calls, conducting job interviews, and participating in banking transactions. Presentation Skills: Practical guidance on delivering professional presentations, using visual aids, and engaging with an audience. Legal Foundations: An introduction to business contracts and the essential elements required to draft legal agreements. Through a combination of grammar reviews, vocabulary building, and simulations of real-life scenarios such as negotiations and handling complaints this book serves as a practical foundation for students to communicate accurately and professionally in a global business environment.