Unit One Job Requirements and the Forms of Busuness Letters Part One Job Requirements Part Two The Forms of Business Letters Summary Exercises Unit Two Establish Business Relations Introduction Business Letters Pattern A of Business Letters Relevant Terms Useful Phrases Summary Exercises Unit Three Credit Inquiry Introduction Business Letters Pattern A of Business Letters Relevant Terms Useful Phrases Summary Exercises Unit Four Enquiries and Replies Introduction Business Letters Pattern A of Business Letters Relevant Terms Useful Phrases Summary Exercises Unit Five Quotations and Proforma Invoices Introduction Business Letters Pattern A of Business Letters Relevant Terms Useful Phrases Summary Exercises Unit Six Offers,Counter-offers and Re-counter Offers Introduction Business Letters Pattern A of Business Letters Relevant Terms Useful Phrases Summary Exercises Unit Seven Orders and Their Fulfillment Introduction Business Letters Pattern A of Business Letters Relevant Terms Useful Phrases Summary Exercises Unit Eight Sales Confirmations Introduction Business Letters Pattern A of Business Letters Relevant Terms Useful Phrases Summary Exercises Unit Nine Terms of Payment Unit Ten Packing Unit Eleven Insurance Unit Twelve Shipping Instructions and Shipping Advice Unit Thirteen Trade Disputes and Settlement Unit Fourteen Sales Promotion Unit Fifteen Expos Unit Sixteen Flexible Trade(Ⅰ) Unit Sixteen Flexible Trade(Ⅱ) Unit Eighteen Miscellaneous AppendixⅠ Commercial Acronyms and Abbreviations AppendixⅡ Key to Exercises