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.
看来髣?要下雨。看着过去完成时结构。
李明刚刚把灯打开。过去完成时的构成。
你眼睛红了。过去完成时被动语态。你刚刚哭过了吗？
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.
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.
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.
我一到剧场，节目就开始了。（从句用过去完成时，主句用过去时）
No sooner had I arrived at the theatre than the performance began .
其表现形式体现在从句的谓语动词需要用一般过去式或者过去完成式。
I'd rather stay than go out. I would rather you had not done anything about it at that time.
已被首次发现是错误的紧张，因为发现是一个不连续的事件在过去完成。
C Have been first discovered is the wrong tense, since the discovery is a discrete event completed in the past.
埃里克几天前死了，这些年来，埃里克都是过着隐士生活。(过去完成时)。
Eric died a few days ago and these years, he had lived as a recluse.
钱包是用报纸包着的，里面有他丢失的钱的一半。(过去完成时中的被动语态)。
The wallet had been wrapped up in newspaper and it contained half the money he had lost.
海伦把钥匙忘到办公室里了，因此她不得不等她丈夫回来。对于过去完成时态练习题。
Helen had left her keys in the office so she had to wait until her husband came home.
过去完成体的“已完成”用法表示一个动作或状态在过去某时之前已经完成或结束。如。
In the "finished" use, the past perfective denotes an action or state already in completion before a specific past.
(用过去完成式表示与过去相反的事实)那老人看着照片，他觉得仿佛回到20年前的时光。
The old man looked at the picture, he felt as though he had gone back to time 20 years ago.
英语状态被动语态句型结构可以是一般现在时、一般过去时、现在完成时或者过去完成时。
The English stative passive voice sentences can be the simple present, the simple past, the present perfect or the part perfect.
我们用过去完成进行时态来形容一个在过去开始的行动，这个行动持续到过去的另一个时间。
We use the past perfect continuous tense to show that an action started in the past and continued up until another time in the past.
英文摘要时态的运用也以简练为佳，常用一般现在时、一般过去时，少用现在完成时、过去完成时，进行时态和其他复合时态基本不用。
The use of tenses in English also is better to concise, commonly used present tense, the past tense, use less when completed, the past is finished now, tense and other composite tense basic need not.
英文摘要时态的运用也以简练为佳，常用一般现在时、一般过去时，少用现在完成时、过去完成时，进行时态和其他复合时态基本不用。
The use of tenses in English also is better to concise, commonly used present tense, the past tense, use less when completed, the past is finished now, tense and other composite tense basic need not.
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