Complaint –说明意图+解释情况+解决方案
1．I am writing to complain about…/that…
2．I am writing to express my dissatisfaction with somebody about something
3．I am most reluctant to complain, but…
4．I feel sorry to trouble you but I am afraid I have to make a complaint about…
Examples:
I am writing to complain about the service on the Beijing-Shanghai train which I took on August 16, 2001.
I am writing to express my dissatisfaction about the Walkm
