看句英语,请高手讲解下时态It will be Obama's first opportunity to speak publicly about his decision to cancel the summit with President Putin.They were to have met in Moscow before next month's G-20 summit in St.Petersburg.They were to hav

来源：学生作业帮助网 编辑：作业帮 时间：2024/05/31 12:53:41

看句英语,请高手讲解下时态
It will be Obama's first opportunity to speak publicly about his decision to cancel the summit with President Putin.They were to have met in Moscow before next month's G-20 summit in St.Petersburg.
They were to have met,这个具体是怎么用时态的

were to do 是虚拟语气表将来,have met 是完成,就是在G20开始之前,他们已经会过面了,但是因为没会面,所以用虚拟

这个是虚拟语气
were to 对未来的虚拟
他们本该在下个月圣彼得堡举行的G-20峰会前在莫斯科会晤的

英文be to do sth 用于表示按照计划除极端情况外必然要发生的事情，这种表述要比be going to do sth 或will do sth语气更肯定。本句所以用了过去时，是因为 “约见” 是过去 “计划” 的事情；而用完成时，则是因为按过去的计划，他们本应在此前的某个（计划好的）时间见过面了（但因取消了计划而未能见)。
希望楼主别让“虚拟语气”的说法误导了！...

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英文be to do sth 用于表示按照计划除极端情况外必然要发生的事情，这种表述要比be going to do sth 或will do sth语气更肯定。本句所以用了过去时，是因为 “约见” 是过去 “计划” 的事情；而用完成时，则是因为按过去的计划，他们本应在此前的某个（计划好的）时间见过面了（但因取消了计划而未能见)。
希望楼主别让“虚拟语气”的说法误导了！

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