Turn Down an Invitation
开篇点题 → Thanks for inviting me to your birthday party.
I’d love to, but...
说明理由 → On Saturday morning, I have a...
I have to...on Saturday afternoon because I...
On Saturday evening, I must...
祝愿与邀请 → Can you go to ...?
I’m sure we will have a lot of fun.

参考范文：
Dear Jack,
Thanks for inviting me to your birthday party. I’d love to, but I’m not available this Saturday.
On Saturday morning, I have an important English test, so I have to spend the whole morning studying for it. And I have to look after my grandma on Saturday afternoon because she is ill and my parents are busy with their work. On Saturday evening, I must go to my cousin's birthday dinner, I have already promised him that I will attend it.
I'm really sorry that I can't join your party. I prepared a lovely birthday gift for you. Happy birthday to you! Can you go to the city park with me next weekend? I'm sure we will have a lot of fun.
Yours,
Li Hua

本题是人教版八年级上册“礼貌拒绝他人邀请”话题的写作题，要求按照给定的思维导图结构完成写作：1. 开篇点题：先感谢对方的生日派对邀请，同时礼貌表明自己无法赴约；2. 说明理由：按照周六早、中、晚的时间顺序，清晰陈述自己当天的各项安排，给出无法赴约的合理原因；3. 收尾部分：先送上生日相关的美好祝愿，再向对方发出后续的相聚邀约，语气要礼貌得体，符合日常交际的表达习惯。

类文训练
假如你是刘琳，刚刚收到你的英国笔友露西(Lucy)的来信。她在信中提到她的父母在学习上给她很大的压力，她也会因为一点儿小事忍不住和他们争吵，她觉得和父母沟通很困难。请你针对露西的烦恼和以下内容提示，给她写一封回信。
内容提示：
1. What can she do to relax?
2. How should she get along with her parents?
3. Who can she ask for help when in trouble?
4. Something more about dealing with problems.
要求：
1.词数不少于80；
2.语言流畅、书写规范、卷面整洁；
3.文中不得使用真实姓名、校名。

Dear Lucy,
I'm sorry to hear that you are having trouble getting on with your parents these days. It's common for teenagers to have such problems, and I'd like to give you some advice.
First, you can do something to relax when you feel stressed. For example, you can take a walk after dinner, listen to your favorite soft music or spend half an hour doing sports every day. These activities can help you calm down easily.
Second, you should understand that your parents give you so much pressure just because they care about you a lot. Don't argue with them when you are angry. You'd better talk with them patiently and tell them your true feelings, then you can work out a proper study plan together.
If you still have trouble solving the problem, you can ask your teachers or close friends for help, and they are sure to give you useful suggestions.
Besides, whenever you meet problems, don't be too upset. Think in other people's shoes, and you will find most problems are not that difficult to solve. I hope things will work out well for you soon.
Yours,
Liu Lin

这是一篇建议类英文书信写作，符合八年级写作要求的写作思路如下：
1. 开篇使用书信标准格式，先表达收到来信的共情，表明自己理解Lucy的烦恼；
2. 主体部分依次覆盖全部提示要点：① 给出适合的放松方式，比如空闲时做运动、听轻音乐、散步来释放压力；② 给出和父母相处的建议：换位思考理解父母的期待，情绪激动时不要争吵，冷静后坦诚和父母说出自己的真实感受，共同商量双方都能接受的学习安排；③ 说明遇到困扰还可以向老师、亲近的好友求助，获取更多可行建议；④ 补充说明遇到矛盾不要急躁，学会换位思考，主动沟通是化解矛盾的好方法；
3. 结尾送上祝福，保证词数达标，所用词汇均为八年级已学内容，无超纲表达。