应用文：语体、方案与行动闭环

写作能力十：应用文的任务语体与行动闭环

邀请、建议、投诉、感谢等应用文共享任务清单，但语气和行动请求不同。本课训练让收件人明确“发生什么、希望他做什么、下一步是什么”。

自拟题目

Write to the campus library to suggest extending weekend study-room hours. Explain the need, propose a practical arrangement, and offer to help collect student feedback.

三段产出

目的：I am writing to suggest a limited extension of weekend study-room hours during examination periods.

理由与方案：说明晚间座位紧张，建议先试行两周并只开放一个区域。行动闭环：愿意协助收集反馈，并请求对方告知是否可讨论。

范文片段：

A two-week trial would allow the library to assess demand without committing to a permanent change. I would be glad to help collect user feedback. Please let me know whether this proposal could be discussed with the service team.

错解反馈

投诉式语气会破坏建议信目的；只写需求而无可执行方案，收件人难以回应；只写 Thank you 而无下一步，行动链未闭合。

正文练习

把同一内容改为礼貌但明确的三段邮件，控制在100词左右。

独立验收

用“目的、理由、方案、请求、语体”五项检查，任何任务遗漏都需补写。