previously

英 [ˈpriːviəsli]

美 [ˈpriːviəsli]

adv.  先前; 以前; (一段时间)以前

CET4CET6计算机

Oxford 3000 / Collins.3 / BNC.1380 / COCA.2313

同义词辨析

agobeforeformerlypreviously【导航词义：以前】

柯林斯词典

• ADV 先前；以前
  Previouslymeans at some time before the period that you are talking about.
  1. Guyana's railways were previously owned by private companies...
     圭亚那的铁路以前是归私有企业所有的。
  2. The contract was awarded to a previously unknown company...
     合同签给了一个之前并不知名的公司。
  3. Previously she had very little time to work in her own garden.
     以前，她没什么时间打理自己的花园。
• ADV （一段时间）以前
  You can usepreviouslyto say how much earlier one event was than another event.
  1. He had first entered the House 12 years previously...
     12年前，他首次成为议员。
  2. She had rented the flat from the council some fourteen months previously.
     大约14个月以前，她从地方政府那里租下了这套公寓。

If you are talking about a period measured back from some earlier time, you usebeforeorpreviously.He had died a month before…She had rented the flat some fourteen months previously.You only useagowhen you are talking about a period of time measured back from the present. You useforto say how long a period lasts in the past, present, or future, or how much time passes without something happening.She slept for eight hours… He will be away for three weeks… I hadn't seen him for four years.You usesinceto say when a period of time started.She has been with the group since it began. …the first civilian president since the coup 17 years ago.You also usesinceto refer to the last time that something happened, or to how much time passes without something happening.She hadn't eaten since breakfast… It was a long time since she had been to church.
如果谈论过去某个时间以前的时间，用 before 或者 previously：He had died a month before（他一个月前去世了），She had rented the flat some fourteen months previously（她大约14个月以前租下了这套公寓）。ago仅用于谈论现在之前的某段时间。for用来表示过去、现在或将来持续的一段时间或者某事多长时间没有发生，如：She slept for eight hours（她睡了8个小时），He will be away for three weeks（他会离开3个星期），I hadn't seen him for four years（我已经有4年没有见过他了）。since用来表示某段时间的开始，如：She has been with the group since it began（自从该集团创立起她就一直在其中工作），the first civilian president since the coup 17 years ago（自从17年前发生政变以来的第一位平民总统），since也可以用来某事最后一次发生的时间或者某事多长时间没有发生，如：She hadn't eaten since breakfast（她早餐以后就没吃过东西），It was a long time since she had been to church（她好久没去过教堂了）。

英英释义

adv

• at an earlier time or formerly
  1. she had previously lived in Chicago
  2. he was previously president of a bank
  3. better than anything previously proposed
  4. a previously unquestioned attitude
  5. antecedently arranged
  Synonym:antecedently

双语例句

• He may suddenly take a dislike to foods that he's previously enjoyed.
  对以前爱吃的食物，他兴许突然就没了胃口。
• He had first entered the House 12 years previously
  12年前，他首次成为议员。
• This means that we have to set all the previously mentioned properties.
  这意味着我们必须设置所有以前提到过的属性。
• This has already been hinted at previously when discussing method, tools, enablement, and organization.
  在讨论方法，工具，启动以及公司时，前文已经提到了这一点。
• Previously this was an informational file that you could query.
  以前，数据库历史文件是一种信息文件，您可以对其进行查询。
• The changed outlook entails higher economic growth than was previously assumed
  观念的改变势必会使得经济增长高于之前预计的水平。
• Previously she had very little time to work in her own garden.
  以前，她没什么时间打理自己的花园。
• Install HACMP if it is has not previously been installed on all the nodes.
  如果还没有在所有节点上安装HACMP，现在就安装它。
• These black models are moving in on what was previously white territory: the lucrative cosmetic contracts.
  黑人模特正逐步涉足曾是白人主宰的领地：签约获利丰厚的化妆品行业。
• It was previously a small monastery but the authorities turned all the monks out.
  那里原先是座小寺庙，但当局把所有僧侣都撵走了。