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英语中有一种时态叫做“过去将来时”,也叫做“将来完成时”,它表示在过去某个时间点或某种情况下,将来某个时间点或某件事情已经完成或者还没有完成。这种时态使用的时候需要用到一些时态标志词,下面将为大家详细介绍。
“Will have + 过去分词”
这是过去将来时最常见的时态标志词,表示在过去某个时间点或某种情况下,将来某个时间点或某件事情已经完成或者还没有完成。例如:
- By the end of this year, I will have graduated from college.(到今年年底,我将已经从大学毕业了。)
- When I arrive at the party, they will have started eating.(当我到达派对时,他们已经开始吃饭了。)
“Be going to have + 过去分词”
这是另一种表示过去将来时的时态标志词,和“will have + 过去分词”类似,表示在过去某个时间点或某种情况下,将来某个时间点或某件事情已经完成或者还没有完成。例如:
- By the end of next month, we are going to have finished the project.(到下个月底,我们将已经完成这个项目了。)
- When I talked to him yesterday, he was going to have left for Paris the next day.(昨天我和他聊天时,他准备第二天去巴黎了。)
“Would have + 过去分词”
这是表示虚拟过去将来时的时态标志词,通常和“if”条件句一起使用,表示如果当时某种情况发生,将来某个时间点或某件事情就已经完成或者还没有完成。例如:
- If I had studied harder, I would have passed the exam.(如果我学习更加努力一些,我就能通过考试了。)
- If he had caught the early train, he would have arrived at the meeting on time.(如果他赶上了早班火车,他就能准时到达会议了。)
以上就是过去将来时常见的时态标志词,希望对您有所帮助。