本文目录
英语语法中，过去将来时是一种用于描述过去某个时间点或事件之后的未来事件的时态。而过去将来时又分为四种不同的结构，这四种结构的使用场景不同，需要我们进行区分。
结构一：be going to + 动词原形
这种结构是最常见的过去将来时，用于表示过去某个时间点计划或打算要做的事情。例如：
- 昨天我决定明天去看电影。Yesterday I decided that I was going to see a movie tomorrow.
- 他们说他们要去旅游，但是他们最终没有去。They said they were going to travel, but they didn't in the end.
结构二：would + 动词原形
这种结构用于表示过去某个时间点经常性或习惯性要做的事情，或者表达请求、邀请、建议等语气。例如：
- 他每天早上都会去跑步。He would go for a run every morning.
- 我们本来想邀请他来参加聚会，但是他有其他安排。We would have invited him to the party, but he had other plans.
结构三：was/were about to + 动词原形
这种结构表示过去某个时间点即将要发生的事情，通常是被其他事情所打断或阻止了。例如：
- 我们正要离开办公室，突然停电了。We were about to leave the office when the power went out.
- 他们正要去旅游，但是天气不好，所以取消了计划。They were about to travel, but the bad weather caused them to cancel their plans.
结构四：was/were going to + 动词原形
这种结构用于表示过去某个时间点已经计划好、安排好的事情，通常是被其他事情所打断或阻止了。例如：
- 我本来要去参加会议，但是因为生病所以取消了。I was going to attend the meeting, but I had to cancel because I was sick.
- 他们原本要在周末去野营，但是因为车坏了所以取消了计划。They were going to go camping over the weekend, but they had to cancel because their car broke down.
以上就是过去将来时四种结构的区别，希望对大家的英语学习有所帮助。
