祈求信

开头：Dear [收信人姓名], I am writing to you in the hope that you can furnish me with the information regarding [请求的内容]. At the present, I am preparing/doing [当前的状态或活动], and I am in lack of [所请求的内容].

中间：The reason is that [解释原因]. I am sorry that I cannot finish in time, but it is possible that I can make up the loss by [提出补救措施]. If so, I will put everything else aside to [进一步说明].

结尾：I do hope that you can understand my situation and accept my apology. Yours sincerely, [你的姓名]

提议信

开头：Dear [收信人姓名], I am writing to express my views concerning [提议的主题]. In the first place, I would like to say [感谢对方的帮助或其他].

中间：Thank you for the help and everything else you have been offering to us. Meanwhile, [提出具体的提议内容]. I believe that [解释提议的原因和好处].

结尾：I hope that my proposal will be considered favorably. Thank you for your time and consideration. Yours sincerely, [你的姓名]

道歉信

开头：Dear [收信人姓名], I am truly sorry that [道歉的原因]. I’m awfully sorry for giving you so much trouble.

中间：Please accept my apologies and understand my situation. I am truly sorry for [进一步说明道歉的原因].

结尾：Please accept my sincerest and deepest apology. Yours sincerely, [你的姓名]

邀请函

开头：Dear [收信人姓名], I’m very glad to tell you that [活动名称] will be held [地点和时间]. I know that [邀请原因]. I think that [进一步说明邀请的原因和好处].

中间：The honor of your presence is requested. If you can attend, I will be more than glad to help. We sincerely hope that you make it.

结尾：I’m looking forward to hearing from you soon. Yours sincerely, [你的姓名]

感谢信

开头：Dear [收信人姓名], I am writing to express my gratitude for [感谢的原因]. I would like to say [进一步感谢的内容].

中间：Thank you for the help and everything else you have been offering to us. It means a lot to me.

结尾：Thank you again for your kindness and support. Yours sincerely, [你的姓名]

这些模板可以帮助你在英语三级考试中快速构建作文框架，节省时间并提高写作效率。希望这些信息对你有所帮助!