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基本构成——
A ) would + 动词原形
如He asked me if I would stay here. 他问我是否要待在这儿。
B ) was / were going to + 动词原形
如No one knew when he was going to finish his homework.
C ) was/ were ( about ) to + 动词原形
如：He said that they were to leave at six.
She said that the meeting was about to begin.
D) come, go, arrive, leave, die 等瞬时动词，用在过去进行时态中表示过去将来。
如：She told us that she was leaving for Yunnan.
基本用法——
A ) 主句为过去时，宾语从句常表示将要发生的事情。
如：Nobody knew what would happen after a hundred years.
We wanted to know whether she was going to speak at the meeting.
B ) 在叙述过去的事情或事情发生的经过时，用过去将来时表示在当时看将来会发生的事。如：It was a Sunday afternoon. A young woman named Maria had just left school. He was going to
start to work the next week, so she decided to buy some new clothes and a new pair of shoes.
C ) 过去将来时还可以用来表示非真实的动作或状态。
如：If I had a chance to study abroad, I would study at Harvard University.
I wish he would go with me to the cinema tonight.
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