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a wren
wren 是可数名词，单数前需用 a 或 the。
A wren was singing in the bush.
一只鹪鹩在灌木丛中唱歌。
雷恩（英国建筑师）
wrens — plural of wren
先理解核心含义，再看它在真实句子里的用法。
雷恩（英国建筑师）
Sir Christopher Wren (1632–1723), English architect who designed over fifty London churches
A wren was singing in the bush.
一只鹪鹩在灌木丛中唱歌。
此词条指英国建筑师克里斯托弗·雷恩，通常写作 Wren；小写 wren 意为“鹪鹩”。
鹪鹩(Troglodytes troglodytes),欧亚鹪鹩,鹪鹩科的模式种,也是该科在旧大陆唯一的物种
Troglodytes troglodytes (Eurasian wren, type species and sole Old World species of the family Troglodytidae).
英国建筑师,设计了五十多座伦敦教堂(1632-1723)
English architect who designed more than fifty London churches (1632-1723)
主要分布于新大陆的雀形目鸟类鹪鹩科的任何成员；即真正的鹪鹩
Any member of a mainly New World passerine bird family Troglodytidae; a true wren.
北半球几种小型活泼的褐色鸟,尾短而直立,以昆虫为食
any of several small active brown birds of the northern hemisphere with short upright tails; they feed on insects
I caught a glimpse of a wren as it darted into the hedge.
我瞥见一只鹪鹩飞快地钻进树篱。
Wrens often build their nests close to the ground, hidden among thick plants.
鹪鹩常把巢筑在靠近地面的地方，藏在茂密的植物间。
The wren that visits our garden every spring has a very loud voice.
每年春天来我们花园的那只鹪鹩叫声非常响亮。
wren 是可数名词，单数前需用 a 或 the。
A wren was singing in the bush.
一只鹪鹩在灌木丛中唱歌。
复数形式 wrens 表示多只，动词用复数形式。
Wrens are small, lively birds found in many gardens.
鹪鹩是在许多花园里都能见到的小型活泼鸟类。
用 the + 单数可泛指整个物种。
The wren is known for its loud song.
鹪鹩以其响亮的鸣叫而闻名。
Not this
I saw wren in the garden yesterday.
Use this
I saw a wren in the garden yesterday.
wren 是可数名词单数，在英语中不能以不带限定词的形式单独出现，必须加冠词 a；中文名词没有这一强制要求，所以学习者容易漏掉 a。加上 a 后表示“一只鹪鹩”，句意完整。
Not this
There are two wren in the tree.
Use this
There are two wrens in the tree.
可数名词 wren 的复数形式是 wrens；中文名词不通过词尾变化表示复数，所以学习者容易把复数写成单数。加 -s 后“两只鹪鹩”的数量关系才正确。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
北美鹪鹩
A house wren built a nest in our birdhouse.
一只北美鹪鹩在我们的鸟屋里筑了巢。
冬鹪鹩
The winter wren has a remarkably loud song for its size.
冬鹪鹩与体型相比，歌声异常响亮。
卡罗莱纳鹪鹩
We found a Carolina wren in the backyard.
我们在后院发现了一只卡罗莱纳鹪鹩。
鹪鹩物种
Several wren species are found in the Americas.
美洲有几种鹪鹩物种。
鹪鹩栖息地
This forest provides ideal wren habitat.
这片森林为鹪鹩提供了理想的栖息地。
可怜的鹪鹩，最微小的鸟儿，会为了巢中的幼雏与猫头鹰搏斗。
In Shakespeare's Macbeth, the wren appears as a symbol of fierce maternal courage.
在莎士比亚的《麦克白》中，鹪鹩象征着强烈的母性勇气。
鹪鹩，鹪鹩，百鸟之王，在圣斯蒂芬节被捉于荆豆丛中。
In Irish tradition, the wren is the central figure of the St. Stephen's Day ceremony, as celebrated in this folk song.
在爱尔兰传统中，鹪鹩是圣斯蒂芬节仪式的主要角色，正如这首民歌所歌颂的那样。
Use wrens naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 wren 拆成 w + ren：w 像展开的翅膀，ren 像鸟身，合起来想象一只翘尾巴的小鹪鹩。
语域：neutral 常见场景：birdwatching、nature writing、literature 作“鹪鹩”讲时通常用于中性语境，多出现在观鸟、自然文学或一般描述中；正式与非正式场合均可使用。注意 Wren 大写时也可能指英国建筑师，需根据上下文判断。
These words share the rhyme /ɛn/ with wren (/rɛn/); in spelling, the chunk is usually -en. Wren has a silent w, so it sounds like 'ren'. Beware wr- lookalikes such as wrap (/ræp/), write (/raɪt/), and wrong (/rɒŋ/), which do not rhyme with wren.
Dictionary facts from ECDICT, WIKTIONARY.