一、過去將來時的含義
過去將來時表示在過去某個時間看來將要發生的動作或存在的狀態。過去將來時常用於賓語從句和間接引語中。例如：I didnt know if he would come.我不知道他是否會來。
They never knew that population would become a big problem.他們從來都不知道人口問題將會成爲一個大問題。
She didnt tell me where she would go.她沒有告訴我她要去哪兒。
Betty said she would visit the Great Wall next Saturday.貝蒂說下週六她要去參觀長城。
二、過去將來時的`表達法
（一）would+動詞原形。常表示按計劃或安排即將發生的事。例如He said he would come to see me.他說他要來看我。
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。常可用來表示按計劃或安排即將發生的事。例如：She said she was going to start off at once.她說她將立即出發。
I was told that he was going to return home.有人告訴我他準備回家。
此結構還可表示根據當時情況判斷有可能但不一定會發生某事。例如：It seemed as if it was going to rain.看來好像要下雨。
（三）come，go，leave，arrive，start等動詞可用過去進行時代替過去將來時。例如：He said the train was leaving at six the next morning.他說火車將於第二天早晨六點離開。