1
there is a catch
口语常用，表示表面诱人但隐藏的困难或陷阱。
The offer sounds great, but there is a catch.
这个提议听起来不错，但其中有蹊跷。
抓住；接住
catches — plural of catch
先理解核心含义，再看它在真实句子里的用法。
抓住；接住
the act of seizing, capturing, or catching something, especially a thrown ball
The offer sounds great, but there is a catch.
这个提议听起来不错，但其中有蹊跷。
抓住或捕获的动作。
The act of seizing or capturing.
接住运动中的物体,尤其是球。
The act of catching an object in motion, especially a ball.
注意到、理解或听到。
The act of noticing, understanding or hearing.
接球游戏。
The game of catching a ball.
The detective made a quick catch of the fleeing suspect.
侦探迅速抓住了逃跑的嫌疑人。
Be careful, there's a catch in this contract.
小心，这份合同里有个陷阱。
The fishermen returned with a huge catch of tuna.
渔民们带着一大网金枪鱼回来了。
口语常用，表示表面诱人但隐藏的困难或陷阱。
The offer sounds great, but there is a catch.
这个提议听起来不错，但其中有蹊跷。
用于说明具体的不利条件，后接同位语从句。
The catch is that you have to book two weeks in advance.
问题是你必须提前两周预订。
多用于体育中，也可指警察抓捕嫌疑人。
She made a spectacular catch in the outfield.
她在外场做出了一次精彩的接球。
Not this
He made three catch during the game.
Use this
He made three catches during the game.
当catch作名词表示‘接球、捕获物’时是可数名词，复数形式为catches。中文‘三次接球’没有单复数形态变化，导致学习者误用原形，但英语中数词后必须用复数catches。
Not this
This phone is cheap, but there is catch: it has no battery.
Use this
This phone is cheap, but there is a catch: it has no battery.
此处catch意为‘陷阱、隐患’，为可数名词单数，前面需要不定冠词a。中文‘有个陷阱’中的‘个’即对应冠词，不可省略。这是因中文量词省略导致冠词缺失的常见错误。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
一大收获；重要的捕获物
The fisherman came back with a big catch.
渔夫带着一大收获回来了。
隐藏的陷阱；意想不到的困难
Be careful; there might be a hidden catch in the contract.
小心；合同里可能有隐藏的陷阱。
一网鱼；捕获的鱼
Today's catch of fish was smaller than yesterday's.
今天捕获的鱼比昨天少。
理想的结婚对象；很棒的收获
Everyone says she is a great catch.
大家都说她是理想的结婚对象。
声音中的哽噎或停顿
He spoke with a catch in his voice, holding back tears.
他说话时声音哽噎，强忍着泪水。
第22条军规（指进退两难的困境）
It's a catch-22: you need experience to get a job, but you can't get experience without a job.
这是一个第22条军规：你需要经验才能找到工作，但没有工作就无法获得经验。
当日捕获的鱼（或当天的特色菜）
The restaurant's menu features the catch of the day, which is always fresh.
这家餐厅的菜单上有当日捕获的鱼，总是很新鲜。
理想的对象（尤指婚恋方面）
He's smart, kind, and successful—definitely a catch.
他聪明、善良且成功——绝对是个理想的对象。
第22条军规（指无法摆脱的困境）
It's a catch-22: you need experience to get the job, but you need the job to get experience.
这是个两难困境：你需要经验才能得到工作，但你需要工作才能获得经验。
《猫鼠游戏》（又译《逍遥法外》）
The movie 'Catch Me If You Can' is based on a true story.
电影《猫鼠游戏》基于真实故事改编。
Use catches naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把catch联想为‘抓住’的陷阱，既是收获也是隐患。
常用于非正式场合，表示需要注意的隐藏问题或陷阱，多用于日常对话、广告或谈判中，例：There's a catch.
These words all rhyme with 'catch' as they share the stressed vowel /æ/ and ending /tʃ/.
Dictionary facts from ECDICT, WIKTIONARY.