专接本公共课英语语法：将来完成时的分类
来源:接本达人专升本 发布时间：2018-09-09 查看次数：21038
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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.
[注：此句型过于复杂，人们很少运用，了解而已。]
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