Dear XXX:
I was glad to get your letter.
很高兴收到你的来信。
Thank you for your invention.
谢谢你的邀请。
But unfortunately I already have plan for the day you mention.I have an appointment then.I really can’t miss it.
但不幸的是,那一天我已经有安排了。届时我有一个约会。我不能错过它。
Please accept my apology.
请接受我的道歉。
I’m sure you will have a good time without me.
我保证,就算没有我,你也会有愉快的时光。
Yours
XXX
I was glad to……
很高兴……
Thank you for your……
感谢你的……
But unfortunately I……
但不幸的是……
不管是英语作文还是语文作文,多找一些题目做练习总归是没错的。语文作文有好词好句,英语作文也会有一些常用句可以记。如果我写的有错也请指正,欢迎在评论区交流讨论。