'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.
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。
Happiness is not a point of future and not a moment from the past, but a mindset that can be designed into the present.
幸福不是未来的某个节点，也不是过去的某个时刻，而是能够融入到当下的一种心境。
I want to tell you about the past, present and future of the human population. So let's start with a few problems.
我想告诉你们有关人口数量的过去、现在和未来。那么让我们从一些问题入手。
Worry, by its very nature, means thinking about the future—and if you hoist yourself into awareness of the present moment, worrying melts away.
忧虑，就其本质而言，意味着思考未来——如果你把自己提升到对当下时刻的意识中，忧虑就会化为乌有。
I want to tell you about the past, present and future of the human population, so let's start with a few problems.
我想告诉你们关于人类的过去、现在和未来的事情，所以让我们从一些问题入手。
One must not think only of the present and neglect the future.
不能只顾眼前，不管将来。
The present, the future and the past are always tied together and are always with us.
现在，将来，过去，这三者总是连在一起也总是伴随着我们的。
This is the key point to understand the present China and its future.
掌握这一点，是了解并认识中国现状与未来的关键。
The mystics say that from the point of view of the Eternal, there is no past, present, and future, and that everything coexists simultaneously.
神秘主义者们说，从“永恒”的观点来看，没有“过去”、没有“现在”、也没有“未来”，一切都是同时存在的。
Regular, consistent contact with business units will help you keep an eye on the future even as you design and build for the present.
即使您目前正在进行设计和构建，与业务单位进行定期、一致的联系也会帮助您密切关注将来。
Entertaining though it is, the Newseum is not the place to go for unbiased reporting on the past, present and future of the press.
无论是过去还是将来，拟或是现在，新闻博物馆不再是报道那些毫无偏见观点的地方了。
ANSWER: This paradox is explained by God being outside of time-he knows the future just like he knows the past and the present.
回答：这个悖论可以用上帝存在超越时间来解释——他可以知道未来，就如同他知道过去和现在。
WINSTON CHURCHILL once said that he “preferred the past to the present and the present to the future”.
温斯顿.丘吉尔曾说“对于现在他更喜欢过去而对于将来他却更喜欢现在”。
Here, escape is not a preoccupation with the past, but a determined focus on the present and the future that is blind to the legacy of the past which brands us and with which we must live.
在这个领域里，逃避并不是专注于过去，而是要坚决地专注于我们都视而不见的、玷污了我们的名声的过去历史遗留下来的遗产的现在和未来，并且我们必须要赖以生活下去。
We shall help you to update the present and future technology concerned with the production from time to time.
我们将不时地帮助贵方更新与生产有关的现有和将来的全部技术。
Take this moment to remember that the future hasn't happened, the past is gone and the present, the wonderful present, is all we have and all that is guaranteed.
用这一刻记住未来的事还并未发生，过去已经过去而现在，美好的现在，是我们拥有的全部，是我们能够保证的全部。
Ms Westwood said: "Through my reworking of the traditional robe I tried to link the past, the present and the future."
维斯特伍德说：“通过我对传统学位礼袍的重新设计，我尝试把过去，现在和未来联系在一起。”
As previously mentioned, a big part of choosing the right solution is weighing the specific needs of your enterprise, both in the present and in the foreseeable future.
如前所述，选择适当的解决方案时，大部分要做的工作就是衡量您企业的特定需求，包括目前的需求和可预见的将来的需求。
Indeed the past must be changed to prevent the energy and trauma from over-bleeding into the present and future, in linear terms.
事实上，必须改变过去以防止能量和创伤因过度伤痛而延伸到线性时间的现在和未来。
The data that must remain the primary focus of attention for SOA are the data produced, consumed and managed by business systems that represent the past, present or future state of the enterprise.
在SOA中仍然必须重点关注的数据是，由那些代表企业过去、现在或未来状态的业务系统产生、消费和管理的数据。
If economic and trade cooperation represents the present day, cultural and educational exchanges mean the future.
如果说经贸合作代表着今天，那么文化和教育交流就意味着未来。
Transactions became more complex, involving for instance the right to buy and sell goods in the future at a price fixed in the present.
交易变得越来越复杂，例如包括了类似在将来买入某种货物的权利，而价格则是目前讲定的。
I only cared about being on time for my next appointment and thinking ahead the future without concentrating on the present.
我只会想着还没发生的将来，担心能否赶得上下一场约会，却忽视了当下的工作。
We'd then often sit down for a long, long discussion of the present, the future, and general industry gossip.
然后我们便会坐下长谈。谈现在，谈将来，谈产业中各家的三长两短。
What do your instincts tell you about the situation and about the person… both in the past, present, and future?
你的直觉对形势和特定个人的理解如何？过去、现在、还有将来？
The Rat Racer: This group works constantly for the future, but in pursuit of wealth and success fails to enjoy the present.
疲于奔命者：这类人为了将来不停工作，但为了金钱和成功忘了享受当下。
Considering the bilateral relations in the past and present, I am confident in the future of China-Nepal relations.
立足中尼关系的过往和现在，我对中尼关系的未来充满信心。
Considering the bilateral relations in the past and present, I am confident in the future of China-Nepal relations.
立足中尼关系的过往和现在，我对中尼关系的未来充满信心。
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