第三，社交用语 

1、The bearer of this letter, Mr. Chen, professor of ..., (an esteemed friend of mine), is desirous of 2、being introduced to your acquaintance. 

3、I am very grateful for your kindness in permitting me to... 

4、I respectfully acknowledge your note and will wait upon you as proposed. 

5、Should an interview be desired, I shall be happy to call at any hour you may appoint. 

6、I have some important business matter to communicate to you. 

7、Anything further will be discussed when we meet. 

8、I regret that a prior engagement will prevent me from a tending. 

9、I think you for your kind entertainment last evening.