1
a/the + loach
loach 是可数名词，指单条泥鳅时通常与 a/an 连用。
A loach slipped out of my hands.
一条泥鳅从我手里滑走了。
泥鳅
先理解核心含义，再看它在真实句子里的用法。
泥鳅
a slender freshwater fish of Eurasia and Africa that resembles a catfish
A loach slipped out of my hands.
一条泥鳅从我手里滑走了。
鳅:生活在底部的淡水鱼,属于鳅总科或鳅亚目。
A bottom-feeding freshwater fish in the superfamily or suborder Cobitoidea.
类似鲶鱼的欧亚和非洲的细长淡水鱼
slender freshwater fishes of Eurasia and Africa resembling catfishes
The loach wriggled out of the bucket and onto the wet floor.
那条泥鳅从桶里扭动出来，掉到了湿漉漉的地板上。
We caught several loaches in the shallow stream last weekend.
上周末我们在浅溪里抓到了几条泥鳅。
The loach hid under the sand in the aquarium.
那条泥鳅躲在水族箱的沙子下面。
loach 是可数名词，指单条泥鳅时通常与 a/an 连用。
A loach slipped out of my hands.
一条泥鳅从我手里滑走了。
用复数形式 loaches 可泛指泥鳅这一类的鱼。
Loaches are popular aquarium fish.
泥鳅是受欢迎的观赏鱼。
catch 的过去式为 caught；loaches 作宾语时常用复数形式。
The children caught loaches in the muddy water.
孩子们在泥水中捉到了泥鳅。
Not this
I caught many loach in the river.
Use this
I caught many loaches in the river.
loach 是可数名词，many 后要用复数形式 loaches。中文“泥鳅”没有单复数变化，所以学习者容易漏掉复数词尾 -es。
Not this
Loach is a freshwater fish.
Use this
The loach is a freshwater fish.
可数名词的单数形式不能不带冠词表示类指。表示某一物种时要用 the + 单数名词（或复数形式）；中文“泥鳅是淡水鱼”没有冠词，所以容易漏掉 the。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
捉泥鳅
The children used nets to catch loaches in the paddy fields.
孩子们用网在稻田里捉泥鳅。
泥鳅养殖
Loach farming requires clean water and careful feeding.
泥鳅养殖需要干净的水和精心的投喂。
泥鳅汤
She made a nutritious loach soup for dinner.
她晚餐做了一道营养的泥鳅汤。
炸泥鳅
Fried loach is served with a garlic dipping sauce.
炸泥鳅配上蒜蓉蘸酱食用。
捕泥鳅
They went loach fishing in the river.
他们去河里捕泥鳅。
Use loach naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
Loach 和 roach 只差首字母 r/l，蟑螂是虫，泥鳅是鱼。
语域：neutral 常见场景：日常对话、鱼类图鉴或科普文章 ‘loach’ 是普通名词，正式与非正式场合都通用；日常谈论鱼类、食材或养殖时比较常见，口语中也自然，没有明显的文体限制。
The following words all rhyme with loach: poach, coach, broach, roach, encroach, reproach; they share the spelling -oach and the sound /əʊtʃ/. Beware lookalikes such as loch (/lɒk/ or /lɒx/) and stomach (/ˈstʌmək/), which are spelled with -ch but do not rhyme with loach.
Dictionary facts from ECDICT, WIKTIONARY.