关于be about to do...when 时态问题及如何解题

关于be about to do...when 时态问题及如何解题

I had just locked the door ___when___ I realised I had left my key on the kitchen table .

例1：He said the train was leaving at six the next morning.他说火车第二天早晨出发。

例2：She told me she was coming to see me.她告诉我她要来看我。

四、特定场合的一般过去时可表示过去将来时

条件状语从句和时间状语从句中须用一般过去时代替过去将来时。

用法：

一、"would+动词原形"表示过去将来时。

"would+动词原形"构成过去将来时，常表示根据计划或安排即将发生的事。

例1：He said he would come to see me.他说他要来看我。

例2：He told me he would go to Beijing.他告诉我他将去北京。

二、"was /were+going to+动词原形"表示过去将来时

"was /were+going to+动词原形"也可表示根据计划或安排即将发生的事。

例1：She said she was going to start at once.她说她将立即出发。

例2：I was told that he was going to return home.他告诉我他准备要回家。

"was /were+going to+动词原形"还可表示根据当时情况判断有可能但不一定会发生某事。

例：It seemed as if it was going to rain.看来好像要下雨。