时间: 2025-04-26 13:25:03
美: [hwen; hwɛn]
英: [wen]
conj. 考虑到;既然;当…时;在…时;如果
adv. 什么时候,何时;(用于时间的表达方式之后)在那时;其时;当时
pron. 那时;什么时侯
n. 时间,时候;日期;场合
最后更新时间:2025-04-26 13:25:03
词源分析:
"When" 源自古英语 "hwænne",其构成是由 "hw-"(意为“何时”)和 "-ænne"(表示时间)组成。
历史背景:
"When" 在英语中首次出现于早期的英语文学作品中,用于询问时间的特性,直到现今仍广泛使用。
课本:
在*的英语教材中,"when" 通常出现在小学和初中的语法章节中。在牛津和美国的教材中,通常在初级英语学阶段(如中小学)中介绍。
正式与非正式语境:
特殊场合:
在科学研究中,"when" 用于描述实验或观察的时间,例如:“When the temperature rises, the reaction rate increases.”(当温度升高时,反应速率增加。)
When do you plan to travel?
你打算什么时候旅行?
I remember when we first met.
我记得我们第一次见面时的情景。
Can you tell me when the meeting starts?
你能告诉我会议什么时候开始吗?
When it rains, it pours.
一下雨就倾盆大雨。(成语)
Do you know when the book was published?
你知道这本书是什么时候出版的吗?
*. I’ll call you when I arrive.
我到的时候会给你打电话。
When in doubt, ask for help.
如果有疑问,就寻求帮助。
She asked me when the project is due.
她问我这个项目什么时候到期。
When the sun sets, the sky turns orange.
当太阳落下时,天空变成橙色。
I always feel happy when I see you.
每次见到你我都感到快乐。
同义词:
反义词:
通过以上分析,希望能帮助你更好地理解和使用单词 "when"。
[QUEST] You use when to ask questions about the time at which things happen. 什么时候 (用于疑问句,询问某事发生的时间)
例:When are you going home?你什么时候回家?
例:When did you get married?你是什么时候结婚的?
[CONJ] If something happens when something else is happening, the two things are happening at the same time. (表示两件事同时发生) 当…的时候
例:When eating a whole cooked fish, you should never turn it over to get at the flesh on the other side.吃一整条做熟的鱼时,你永远都不要把鱼翻过来吃另一边的肉。
[CONJ] You use when to introduce a clause in which you mention something that happens at some point during an activity, event, or situation. 当…时 (引导从句,表示从句中提到的事发生在另一活动、事件或情况期间)
例:When I met the Gills, I had been gardening for nearly ten years.我结识吉尔一家时,我已经几乎做了十年的园艺。
[CONJ] You use when to introduce a clause where you mention the circumstances under which the event in the main clause happened or will happen. 在…情况下 (引导从句,表示从句中提到的情况是主句中已经发生或即将发生的事的前提)
例:When he brought Imelda her drink she gave him a genuine, sweet smile of thanks.当他给艾梅尔达拿来一杯饮料时,她给了他一个真诚、甜美、表示谢意的微笑。
[CONJ] You use when after certain words, especially verbs and adjectives, to introduce a clause where you mention the time at which something happens. 什么时候 (用在某些词尤其是动词和形容词后,引导从句说明某事发生的时间)
例:I asked him when he'd be back to pick me up.我问他什么时候回来接我。
[PRON-REL] You use when to introduce a clause that specifies or refers to the time at which something happens. 当…的时候 (引导表示某事发生的具体时间的从句)
例:He could remember a time when he had worked like that himself.他还记得当他自己也像那样工作的那段时间。
[CONJ] You use when to introduce the reason for an opinion, comment, or question. 既然 (用于引入观点、评论、或问题的原因)
例:How can I love myself when I look like this?既然我这么一副样子,我怎么能爱我自己?
[CONJ] You use when in order to introduce a fact or comment which makes the other part of the sentence rather surprising or unlikely. 而 (引出令人吃惊的事实或评论)
例:Our mothers sat us down to read and paint, when all we really wanted to do was to make a mess.我们的妈妈们让我们坐下读书、画画,而我们真正想要做的却是胡闹一阵。