过去将来时的结构和用法

过去将来时可以用下面这些形式表达：
would do 站在过去看将要发生的事
was /were going to do 按照过去的计划、打算即将做某
was/were to do 按照过去的计划、安排即将做某
was/were about to do 突出动作发生的突然性
He knew he would meet her again.
他知道他会再见到她的。
We were going to the farm the next day.
第二天我们打算去农场。
She was to leave her hometown for a strange place to start her business again then.
当时，她打算离开家乡到陌生的地方重新开始她的生意。