1
a ladybird
ladybird 是可数名词，表示单只时用 a/an。
A ladybird landed on the window.
一只瓢虫落在了窗户上。
瓢虫
先理解核心含义，再看它在真实句子里的用法。
瓢虫
ladybird
A ladybird landed on the window.
一只瓢虫落在了窗户上。
瓢虫
small round bright-colored and spotted beetle that usually feeds on aphids and other insect pests
Look at that red ladybird on the leaf!
看那片叶子上的红色瓢虫！
Ladybirds help farmers by eating harmful insects.
瓢虫吃害虫，对农民很有帮助。
A ladybird landed on my arm while I was reading in the park.
我在公园看书时，一只瓢虫落在我胳膊上。
ladybird 是可数名词，表示单只时用 a/an。
A ladybird landed on the window.
一只瓢虫落在了窗户上。
ladybirds 是复数形式，作主语时谓语动词用复数。
Ladybirds are often red with black spots.
瓢虫通常是红色带黑点的。
the + 单数名词可泛指整个物种。
The ladybird helps gardeners by eating aphids.
瓢虫吃蚜虫，对园丁有帮助。
Not this
I found ladybird on the leaf.
Use this
I found a ladybird on the leaf.
英语中可数名词单数不能裸用，前面需要加冠词（如 a/an/the）；汉语没有冠词，所以容易漏掉。这里改为 a ladybird 才符合语法。
Not this
I saw many ladybird in the park.
Use this
I saw many ladybirds in the park.
ladybird 是可数名词，many 后面必须用复数形式；汉语名词没有复数变化，因此学习者常漏掉 -s。改为 ladybirds 表示多只。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
七星瓢虫
A seven-spot ladybird landed on the leaf.
一只七星瓢虫落在叶子上。
瓢虫幼虫
The ladybird larva feeds on aphids.
瓢虫幼虫以蚜虫为食。
瓢虫身上的斑点
The number of ladybird spots varies between species.
瓢虫身上的斑点数量因物种而异。
异色瓢虫
The harlequin ladybird is an invasive species in Europe.
异色瓢虫在欧洲是一种入侵物种。
一群瓢虫
A swarm of ladybirds gathered on the sunny wall.
一大群瓢虫聚集在向阳的墙上。
瓢虫，瓢虫，快快飞回家；你的房子着了火，你的孩子不见了。
As a child, she loved reciting the old rhyme, “Ladybird, ladybird, fly away home.”
她小时候很喜欢背诵那首古老的童谣：“瓢虫，瓢虫，快快飞回家。”
Use ladybird naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 ladybird 拆成 lady + bird：想象一只穿花裙子的“淑女鸟”其实是瓢虫，正趴在叶子上吃蚜虫。
语域：mixed 常见场景：英国日常口语、儿童读物、园艺话题 ladybird 是英式英语中对瓢虫的常见说法，多用于日常口语和儿童读物；在美式英语中更常说 ladybug。整体偏向非正式但自然的中性表达，正式书面语中较少出现。
The words bird, word, heard, third, and nerd all rhyme with the final syllable of ladybird: each has the same stressed vowel /ɝ/ followed by /d/. The /ɝ/ sound can be spelled -ir- (bird, third), -or- (word), -ear- (heard), or -er- (nerd). Be careful with ladybug: it looks similar to ladybird and shares the first part 'lady', but it does not rhyme—it ends with /bʌɡ/.
Dictionary facts from ECDICT, WIKTIONARY.