"I have finished reading" 或 "I have completed reading" 是表示读完了的常用说法。
这个短语来自英语动词 "finish" 和 "read" 的组合。"Finish" 意思是完成，"read" 意思是读。因此，"I have finished reading" 意思是 "我已经读完了"。
例句：
I have finished reading the book. (我已经读完了这本书。)
She has completed reading all of the assigned novels. (她已经读完了所有指定的小说。)
He said that he has finished reading the newspaper. (他说他已经读完了报纸。)