一个书信类作文万金油式的首句：I’m writing

I’m writing to…是一个可以用于多种书信类英语作文的首句，用法举例：

1. 告知

① I am writing to inform you of the details of the activity to be held next week at our school.

② I am writing to inform you that an activity is to be organized for foreign students next Monday in our school.

2. 道歉：

③ I am writing to apologize to you for my not being able to accompany you to Beijing.

3. 咨询：

④ I am writing to inquire about your advertisement in ‘The Times’.

⑤ I am writing to inquire whether you need a typewriter. 

4. 邀请：