I’m writing to complain about a purchase that I made at your store three days ago.

　　2.我写此信是要表达我对三天前从贵店购买的家具的糟糕质量的强烈不满。

　　I’m writing to express my dissatisfaction with the horrible quality of the furniture that I bought from your store last week.

　　3.我写信告知你我需要马上搬到另外一个房间去。

　　I’m writing to inform you that I need to move into another room as soon as possible.

　　4.我要对我一周前从贵处购买的一台照相机提出投诉。

　　I wish to make a complaint about a camera which I bought at your place a week ago.

　　5.我写信投诉最近我通过你们旅行社所做的一次到澳大利亚的旅游。

　　I’m writing to complain about my recent trip to Australia through your travel agency.

　　6.我写信是投诉我们在贵宾馆住宿期间你们饭店的饭菜和服务质量的。

　　I’m writing to complain about the poor food quality and service that we received at your hotel

　　7.作为一名新的留学生，刚来到校园才三天时间，我真的很不情愿对任何事情做任何抱怨，然而，请相信我：我不得不这么做。

　　As a new international student who has only been here on campus for 3 days, I’m most  reluctant to complain about anything, but, please trust me: I have to do so.

　　8.我写此信是想对您邀请我、给我如此殊荣让我参加你们的会议表示我的感谢。

　　I’m writing to express my appreciation for the invitation you sent me, granting me the honor of attending your conference.

　　9.我写此信的目的是向您解释一下我上次缺席了您的课的原因。

　　I’m writing to explain to you the reason why I was absent from your lecture last time.

　　10.你来信询问我对你应该是选择去澳大利亚还是加拿大留学的建议，在此，我想给你一些建议。You wrote to ask for my advice concerning whether you should choose to go to Australia or Canada for your study and now I would like to give you some suggestions.

　　11.我写信前来确认我此前丢失的一张信用卡。

　　I am writing to confirm the loss of my credit card.

　　12.谢谢你9月18日的来信。

　　Thank you for your letter dated Sep. 18.

　　13.我写信的目的是想打听一下我遗忘在贵宾馆房间里的一个包的事宜。

　　I’m writing to inquire about a bag that I left behind in a room at your hotel.