一般过去将来时
形式:would+动词原形和was/were going to+动词原形
用于描述过去某时间里你对于未来的想法和猜测。

一般过去时
形式:动词过去时
用于描述过去发生过的事情。

例句对比:
(1)
He was here at eight o'clock. 他8点就在这了。
He said he would be here at eight o'clock. 他说他将在八点钟到达这里。

(2)
He took care of the baby. 他照看婴儿。
He said that he was going to take care of the baby. 他说他会去照看这个婴儿。

(3)
You had the talk with him. 你和他谈过了。
You told me you were going to have the talk with him. 你和我说过,你会和他好好谈谈的。

注意:
像所有的将来时一样,一般过去将来时不能用于包含以下提示词的从句中:when, while, before, after, by the time, as soon as, if, unless等等,这时要使用一般过去时。即,特定场合的一般过去时可以表示过去将来时。

例如:
(1)我告诉马克了,一旦他来了,我们就出去吃晚餐。
I already told Mark that when he would arrive, we would go out for dinner. (错误)
I already told Mark that when he arrived, we would go out for dinner.(正确)

(2)他说倘若战事顺利的话,他要给我弄一个奖章。
He said that if the war would go well, he would see that I was decorated. (错误)
He said that if the war went well, he would see that I was decorated.(正确)

怎么样?同学们掌握使用一般过去时代替一般过去将来时的用法了吗?