一、過(guò)去將來(lái)完成時(shí)和過(guò)去將來(lái)時(shí)在時(shí)間上是一致的，都表示過(guò)去某段時(shí)間看將來(lái)的事情，只是，過(guò)去將來(lái)完成時(shí)更強(qiáng)調(diào)的是“完成”，某件事在過(guò)去的時(shí)間看將來(lái)的事情已經(jīng)完成了。
1.I thought Tom would have told our teacher some bad things about us.
我想湯姆肯定會(huì)告訴老師咱們的壞事的。
2.He knew by the time he arrived she would have prepared everything for you.
他知道他到時(shí)她肯定準(zhǔn)備好了一切事情。
二、而過(guò)去將來(lái)時(shí)并無(wú)這一層的意思，它單單指的是過(guò)去的時(shí)間看將來(lái)的事情。例如：
1、由助動(dòng)詞“would/should+動(dòng)詞原形”構(gòu)成,should主要用于主語(yǔ)是第一人稱時(shí);would可用于各種人稱。
1）Whenever we had trouble, he would come to help us.
不論何時(shí)我們遇到困難,他總會(huì)給予幫助。
2）He said he would come to see me.
他說(shuō)他要來(lái)看我。
3）He told me he would go to Beijing.
他告訴我他將去北京。
2、由“was/were going to+動(dòng)詞原形”構(gòu)成。
1）No one knew when he was going to come.
沒(méi)有人知道他什么時(shí)候來(lái)。
2）She said she was going to start off at once.
她說(shuō)她將立即出發(fā)。
3）I was told that he was going to return home.
有人告訴我他準(zhǔn)備回家。
3、come， go， leave， arrive， start等動(dòng)詞可用過(guò)去進(jìn)行時(shí)代替過(guò)去將來(lái)時(shí)。例如:
1）He said the train was leaving at six the next morning.
他說(shuō)火車將于第二天早晨六點(diǎn)離開(kāi)。
2）She told me she was coming to see me.
她告訴我她要來(lái)看我。