I have finished my introduction to the book.

我已经写完了这本书的序言。

youdao

I have almost finished my introduction to the book.

我几乎完成了书的引言。

youdao

Ive finished my introduction to the book.

我已经写好了这本书的序言。

youdao

Ive finished my introduction to the book.

我已经写好了这本书的序言。

youdao