1
a flock of + plural noun
flock 主要指鸟类或羊群，也可指人群（常带贬义）。
We saw a flock of geese flying south.
我们看到一群大雁向南飞去。
鸟群；一群鸟
先理解核心含义，再看它在真实句子里的用法。
鸟群；一群鸟
A group of birds together, such as during migration.
We saw a flock of geese flying south.
我们看到一群大雁向南飞去。
一群鸟聚在一起,如为了迁徙而聚集的鸟群。
A number of birds together in a group, such as those gathered together for the purpose of migration.
用于床垫的粗羊毛或棉絮
Coarse tufts of wool or cotton used in bedding.
一群动物聚集在一起,尤指羊群,也指山羊、农场动物等
A large number of animals associated together in a group; commonly used of sheep, but (dated) also used for goats, farmed animals, and a wide variety of animals.
一绺羊毛或头发
A lock of wool or hair.
A flock of geese flew over the lake in a V formation.
一群大雁排成人字形飞过了湖面。
The shepherd led his flock down from the mountain pasture.
牧羊人带领他的羊群从高山牧场下来。
The pastor delivered a sermon to his faithful flock on Sunday morning.
牧师在周日早晨向他忠实的会众布道。
flock 主要指鸟类或羊群，也可指人群（常带贬义）。
We saw a flock of geese flying south.
我们看到一群大雁向南飞去。
在宗教语境中，flock 指教徒会众。
The pastor preached to his flock every Sunday.
牧师每个周日向他的会众布道。
flocks of 可表示大量、成群的人或物。
Flocks of tourists crowded the square.
一群群游客挤满了广场。
Not this
There are many flock in the sky.
Use this
There are many flocks of birds in the sky.
flock为可数名词，表示多个群体时需用复数形式flocks，并常用复数结构flocks of.
Not this
I saw a flock with birds flying over the field.
Use this
I saw a flock of birds flying over the field.
表达‘一群鸟’的正确介词搭配是of，而非with，受中文直译影响容易误用with。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
一群鸟
A flock of birds flew over the field.
一群鸟飞过田野。
一群羊
The shepherd led his flock of sheep down the hill.
牧羊人领着他的羊群下山。
牧师的会众
The pastor visited members of his flock who were sick.
牧师探望了他会众中生病的成员。
一群游客
A flock of tourists gathered around the guide.
一群游客聚集在导游周围。
整个羊群（或全体会众）
The farmer sold the whole flock at the market.
农民在市场上卖掉了整个羊群。
物以类聚，人以群分
They are all artists, so it's no surprise they hang out together—birds of a feather flock together.
他们都是艺术家，所以经常聚在一起不足为奇——物以类聚，人以群分。
蜂拥而至
Tourists flock to the small town every summer for its famous festival.
每年夏天，游客们蜂拥而至这个小镇，参加其著名的节日。
像一群羊一样（盲从）
The students followed the teacher's instructions like a flock of sheep, without asking any questions.
学生们像一群羊一样听从老师的指令，没有提出任何问题。
物以类聚，人以群分。
Birds of a feather flock together, so it's no surprise they became friends.
物以类聚，人以群分，所以他们成为朋友并不奇怪。
Use flock naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
音似'弗洛克'，想象一群羊或鸟聚集在一起。
中性语域，常用于自然或文学语境中描述鸟类成群结队。典型设置：在野外观察鸟类时描述一群鸟。
常与of连用表示一群
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.