Ihave eaten是动词eat的现在完成时；Ihad eaten是过去完成时；Iwill have eaten是将来完成时。
'I have eaten' is the present perfect tense of the verb 'to eat', 'I had eaten' is the past perfect and 'I will have eaten' is the future perfect.
我们应该用过去完成时说“已经醒来”，但是“醒过来”更好，彼得总是说“醒过来”。
We ought to use the pluperfect and say wakened, but woke is better and was always used by Peter.
第二天我飞过去完成了它，他被震惊了。
八过去完成时态：发生在过去的过去。
医生问他吃了什么。过去完成时的构成。
看来髣?要下雨。看着过去完成时结构。
“直到……结束”，常用于过去完成时。
现在完成时和过去完成时都属于完成时态。
The present and past perfect tenses both belong to the perfect tense.
(过去完成时)他们说生产成本已经下降了。
大部分的语法都只是一般过去时和过去完成时。
它们是用作现在完成时和过去完成时的助动词。
They are used as auxiliaries to the present and past perfect tenses.
为什么我们用过去完成时，来表示过去的事情？
Why do we use "had been warned" to describe an event happened in the past?
“已是”用过去完成时，深夜在发现山洞之前。
Andrew一喝完咖啡就走了。(过去完成时)。
当我到达那里时，工作已经做完了。（过去完成时）
他们只等了一会儿车就来了。看着过去完成时练习。
They had only been waiting for the bus several moments when it came.
“我过去已经完成了”是过去完成时态的一个例句。
你眼睛红了。过去完成时被动语态。你刚刚哭过了吗？
等，用过去完成时表示一种未实现的愿望和想法。如。
We had hoped that you would come to our English party, but you didn't.
靠过去完成的无法让人保有，必须在路上持续交出成绩。
A fellow doesn't last long on what he has done. He's got to keep on delivering as he goes along.
我以为您的秘书把它们寄了。对不起。(过去完成时)。
I thought they had been posted by your secretary. I 'm sorry.
她在考试之前一直患重感冒。看看初中英语过去完成时。
She had been suffering from a bad cold when she took the exam.
试用括号里动词的过去完成时态或一般过去时态来填充空格。
B. Fill in the blanks with the past perfect or simple past tense of the verbs in brackets.
这是她那一年第三次失业了。过去完成时的用法总结如下表。
It was the third time that she had been out of work that year.
靠过去完成的无法让人保有成功，必须在路上持续交出成绩。
A fellow doesn't last long on what he has done. He's got to keep on delivering as he goes along.
靠过去完成的无法让人保有成功，必须在路上持续交出成绩。
A fellow doesn't last long on what he has done. He's got to keep on delivering as he goes along.
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