English for Business: Reinventing the Case and Project-based Learning is addressed to undergraduate students in need to learn English in a business context, the language skills of which are integrated into each unit. Eight units are designed, entitled Application Letters, Job Interview, Inquiry Letters, Product Description, Complaint Letters, Handling Complaints, Business Report, and Business Meeting. Th ey are developed based on the Common European Framework of Reference for Language at level B which equals to the intermediate level. Each unit is divided into six sub-units: Let’s Start, Let’s Observe, Let’s Try, Let’s Check, Let’s Get It, and Let’s Reflect