1.the top part of a business letter日期：date: 23 december XX地址：mr. james greensales managerbbb plc55-60 old st, london e6 6hg称谓：dear mr. green (dear gentlemen, dear sir, dear sirs, dear madam)2.the body part of a business letter标题（可以不要）正文3. look at the two endings of business letter below. notice the useful phrases that are used in these letters.(1)please let me know if this is convenience.i look forward to hearing from you.best wishesyours sincerely,(signature)ms. gillian janespersonnel nanag
