新概念二册语法十三．将来完成时：shall / will have + 过去

十三．将来完成时：shall / will have + 过去分词

 

表示将来某时之前已经完成的动作。

►. They will have been here for 5 years next Friday.

►. By the end of next term, the students will have finished the book.

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