I'm writing a story.

我正在写一个故事。

youdao

I'm writing goodbye letters to all my friends at school.

我正在给学校的所有朋友写告别信。

youdao

I'm writing in answer to your letter.

特此函复。

《牛津词典》

So when I'm writing the poem, when the poem is writing itself through me, at its best, I'm reading it; it is reading me.

所以，我在写诗时，或者说，当诗在通过我创造自己时，我在读诗，诗也在读我。

普林斯顿公开课 - 人性课程节选

Specifically my favorite is, I'm transcribing, I'm writing down,

我最喜欢的，我都做了文字实录，我都记录了他们的话，

记忆深刻的研究 - SpeakingMax英语口语达人

I kind of like them, but I think that they're not enough; that's why I'm writing a book about this.

我有点喜欢他们但是我想他们的计划并不周全;,所以我正在写一本关于这个的书。

耶鲁公开课 - 金融市场课程节选

I'm writing it with someone and we have a rough draft, but we're re-writing it.

CNN: The freed man

When I tell a tourism official I'm writing a story about "disconnecting to recharge, " she smiles warmly.

CNN: A social-media addict tries to disconnect

The book bombed--it ranks 41, 266 on Amazon as I'm writing this--but it did pay off in other ways.

FORBES: Magazine Article