我已经读完了这本书 I have read this book
我已经读完这本书了
I have finished reading the book
以上为机器翻译结果，长、整句建议使用 人工翻译 。
到你回来时，我已经读完这本书了。
By the time you came back, I had finished reading this book.
youdao
我已经读完这本书了。
I have finished reading this book already.
I have finished reading the book already.
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