基本信息
過去將來時的構成（例句如下：）
肯定句：（1）主語+be（was或were）going to+動詞原形（v.原)+其它
（2）主語+would+動詞原形+其它
（3）was/were+動詞不定式
否定句：（1）主語+be not（wasn‘t或weren’t）going to+動詞原形+其他
（2）主語+would not+動詞原形 +其它
疑問句：（1）Be（Was或Were）+主語+going to+動詞原形+其它
（2）Would+主語+動詞原形+其它
被動語態（1）.would + be + 動詞的過去分詞（done）
（2).was / were +going to be + 動詞的過去分詞.(done)
結構
1.同一般將來時不一樣，把動詞be變為過去式，把will，shall變為過去式。
例句：I didn't know if he would come.
=I didn't know if he was going to come.
我不知道他是否會來。
She was sixty-six. In three years，she would be sixty-nine.
她66歲了。三年後，她是69歲。
She told us that she would not go with us，if it rained.
她告訴我們，如果下雨的話，她就不和我們一起去了。
I didn't know how to do it. What would be their ideas？
我不知道該怎么辦，他們會有什麼想法呢？
2.過去將來時常可用來表示過去習慣性的動作。此時，不管什麼人稱，一律用would。
過去將來時有時可帶時間狀語
注意
1"was/were going to + 動原"或"was/were +動詞不定式完成式"可表示未能實現的過去將來時間的動作。
2was/were about to do
"was/were about to do"表示說話的瞬間就會發生的動作。
3was/were on the point of doing
提示"be about to do" 和 "be on the point of doing"結構一般不與表示將來的時間狀語連用，但後面可以接when引導的分句。
用法
一、"would+動詞原形"表示過去將來時
"would+動詞原形"構成過去將來時，常表示根據計畫或安排即將發生的事。
例1：He said he would come to see me.他說他要來看我。
例2：He told me he would go to Beijing.他告訴我他將去北京。
二、"was /were+going to+動詞原形"表示過去將來時
"was /were+going to+動詞原形"也可表示根據計畫或安排即將發生的事。
例1：She said she was going to start at once.她說她將立即出發。
例2：I was told that he was going to return home.他告訴我他準備要回家。
"was /were+going to+動詞原形"還可表示根據當時情況判斷有可能但不一定會發生某事。
例：It seemed as if it was going to rain.看來好像要下雨。
三、某些動詞的過去進行時可表示過去將來時
come,go,leave,arrive,start等嚴格按照時間表發生的表起止的動詞可用過去進行時代替過去將來時。
例1：He said the train was leaving at six the next morning.他說火車第二天早晨出發。
例2：She told me she was coming to see me.她告訴我她要來看我。
四、特定場合的一般過去時可表示過去將來時
條件狀語從句和時間狀語從句中須用一般過去時代替過去將來時。
例1：I didn't know when she would come, but when she came I would let you know.我不知道她什麼時候來，但她來了我會告訴你。
析：第一個when引導賓語從句，可使用將來時，第二個when引導時間狀語從句，只能用一般過去時代替過去將來時
基本結構
過去將來時由would，was/were going to，was/were to，was/were about to等加動詞原形構成，也可由was/were on the point of加動名詞構成。
例句
I knew you would agree. 我知道你會同意的。
I said I would arrange everything. 我說我來安排一切。
I didn't know if he would come. 我不知道他是否會來。
She was sixty-six. In three years，she would be sixty-nine. 她66歲了。三年後，她是69歲。
I didn't know how to do it. What would be their ideas？我不知如何去做，他們會有什麼想法呢？
Last Sunday we were going to visit the Great Wall, but it rained. 上星期天我們本想去遊覽長城的，但卻下雨了。
I should be told about the thing.應該有人告訴我這件事。
Were they going to finish the work before the next day?第二天他們能完成工作嗎？
They were not going to go hiking unless they finished their homework.除非他們完成作業，否則他們不會去遠足。
