导语：将来完成时是完成时的一种，下面由YJBYS小编告诉大家将来完成时的构成、用法及分类，欢迎参考!
将来完成时的'构成方法是“will have +过去分词”。如：
Hopefully after three years at university I will have matured. 希望3年大学生活之后我能变成熟。
Only five short years later, your money will have grown by $94,000. 仅短短 5 年时间后，你的钱就会增多 94,000 美元。
He will have been heartened by the telephone opinion poll published yesterday. 他会为昨天公布的电话民意调查结果感到鼓舞。
将来完成时的用法1. 表示“将来完成”
即表示到将来某个时间为止势必会完成或预计要完成的动作。如：
When we get there, she'll have gone to work. 我们到那里时她会已上班去了。
I expect you will have changed your mind by tomorrow. 我预料到明天你就会改变主意了。
2. 表示“持续”
即表示某种状况将一直持续到说话人所提及的某一将来时间。如：
We will have been married a year on June 25th. 到6月25日我们俩结婚就满1年了。
By this time next week, I will have been working for this company for 24 years. 到下星期此刻，我就已经为该公司干了24年了。
3. 表示“推测
即表示根据某情况作出的推测。如：
That will have been Roland. He said he'd be back at 7. 准是罗兰。他说他7点钟回来。
There will have been a definite result before Friday. 星期五以前肯定会有结果。
将来完成时的分类将来完成时：
1.构成：shall / will have + 过去分词
2.功能：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.
过去将来完成时：
1.构成：would / should have + 过去分词
2.功能：表示从过去某个时间看将来某时之前已经完成的动作。
→He said that they would have arrived by seven o'clock.
将来完成进行时：
1.构成：shall / will have been + 现在分词
2.功能：表示某一动作将继续到将来某时，且该动作此时尚未发生。
→We shall have been staying here for four weeks when Tom arrives.
→It will have been raining for a week if it does not stop tomorrow.
学识谷
