Unit 1 Business Letter Writing Layout of Business Letters Writing Principles of Business Letters Unit 2 Invitation and Arrangement of Visits Introduction Points for Attention Business Letters Language Points Word Study Useful Sentence Menu Exercises Reading and Comprehension Unit 3 Establishing Business Relations Introduction Points for Attention Business Letters Language Points Word Study Useful Sentence Menu Exercises Reading and Comprehension Unit 4 Enquiries and Replies Introduction Points for Attention Business Letters Language Points Word Study Useful Sentence Menu Exercises Reading and Comprehension Unit 5 Quotations, Offers and Counter-offers Introduction Points for Attention Business Letters Language Points Word Study Useful Sentence Menu Exercises Reading and Comprehension Unit 6 Sales Promotion Introduction Points for Attention Business Letters Language Points Word Study Useful Sentence Menu Exercises Reading and Comprehension Unit 7 Orders and Their Fuffilment Introduction Points for Attention Business Letters Language Points Word Study Useful Sentence Menu Exercises Reading and Comprehension Unit 8 Payment Introduction Points for Attention Business Letters Language Points Word Study Useful Sentence Menu Exercises Reading and Conrehension ……