ascertain现在分词

1. 确定
2. 查明
3. 弄清
4. 把…弄实在
5. 肯定
6. 确知
7. 确定下来
8. 得出定论
9. 摸准
10. 摸清
11. 弄清楚
12. 查查清楚
13. 打听清楚
14. 查实
15. 探明
16. 调查
17. 探究
18. 证实
19. 探知

1. establish after a calculation, investigation, experiment, survey, or study;

   "find the product of two numbers"
   "The physicist who found the elusive particle won the Nobel Prize"
   

2. be careful or certain to do something; make certain of something;

   "He verified that the valves were closed"
   "See that the curtains are closed"
   "control the quality of the product"
   

3. find out, learn, or determine with certainty, usually by making an inquiry or other effort;

   "I want to see whether she speaks French"
   "See whether it works"
   "find out if he speaks Russian"
   "Check whether the train leaves on time"
   

4. learn or discover with certainty

1.（尤指经过努力后）查明，弄清，确定
If youascertain the truth about something, you find out what it is, especially by making a deliberate effort to do so.

e.g. Through doing this, the teacher will be able toascertain the extent to which the child understands what he is reading...
这样一来，老师就能确定孩子们对他所读的内容理解多少了。
e.g. Once they had ascertained that he was not a spy, they agreed to release him...
一旦确认他并非间谍，他们即同意将他释放。

1. I'm going to ascertain the truth.
   我要查明。
2. The detective tried to ascertain the facts about the robbery.
   侦探试图查明这起抢劫案的。
3. I am going to ascertain the truth of his statement.
   我将弄清他的话是否真实。
4. The insurance adjustor had to ascertain the exact value of the missing jewels.
   这个保险金估算人必须核实这些丢失的珠宝的价值。
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5. The power needs of the ship must be ascertained.
   这艘船所需的动力必须弄清。
6. The previously unidentified objects have now been definitely ascertained as being satellites.
   原来所说的不明飞行物现在已证实是卫星。

1. I ascertained that he was dead.
   我确定他死了。
2. He ascertained that the news was true.
   他确定消息属实。
3. He had ascertained that his son-in-law was among the living prisoners.
   他已查明他女婿曾在活着的囚犯之中。

1. I want to ascertain what time the train arrives, so that I may get to the station in time to meet my friend.
   我查清火车到达的时间,以便我准时到火车站去接我的朋友。
2. It is difficult to ascertain what the people really want.
   问题在于一定要弄清人们究竟需要什么。
3. Can you ascertain who the owner is?
   你能查明物主是谁吗?
4. We could not ascertain how it happened.
   我们没能弄清它是怎样发生的。

• Who may perhaps..Be ascertained that Two and Two make four.

  出自：Charles Churchill

• I wish to be ascertained of the..intentions of the Court.

  出自：G. Morris

ascertain, determine, discover, learn, unearth

这组词都可表示“发现以前自己不知道的东西”。其区别是：

discover指经过调查、探索去发现已经存在或可能存在、事实上的东西,这种发现也可能出于偶然; ascertain很少指偶然的发现,侧重先前的无知与无把握,以及认真地去发现真理或; determine比ascertain更强调寻找事实或真理,以解决争端或争执,主要用于科学和法律方面; unearth指将隐藏的、被遗忘的、失去的或极其难以追寻的东西公之于众或暴露于世,常常强调发现以前所做的认真长期的调查; learn指获得知识,发现者一般没有或很少花多大力气。例如:

The surgeon general has determined that cigarette smoking is dangerous to our health.卫生已确定吸烟危害健康。

The question is to ascertain what the people really want.问题在于一定要弄清人们究竟需要什么。

We discovered the powder consisting of harmful ingredients.我们发现这种粉末含有害成分。

Projecting ourselves into the future world, we should learn as much as we can now.设想一下处身于未来的世界当中,我们现在就应该尽可能多学一点东西。

They have unearthed the secret.他们已经发现了这个秘密。

discover，find，detect，ascertain

这些动词均有“发现”之意。

discover指发现本来已经存在，后被人认识的事物、真理或情况。

find普通用词，可指偶然发现，也可指经过寻找后得到或重新获得已失去的东西。强调动作的结果。

detect正式用词，强调经过周密观察或研究而有所获得和发现，尤指发现有意隐藏之物。

ascertain较正式用词，指有意搜寻与发现。