1
a padlock on sth
padlock 作名词时是可数名词，常与 on 连用表示某物上的挂锁。
The gate has a padlock on it.
大门上有一把挂锁。
挂锁
先理解核心含义，再看它在真实句子里的用法。
挂锁
a detachable lock with a hinged shackle that is passed through a ring or chain and snapped shut
The gate has a padlock on it.
大门上有一把挂锁。
一种可拆卸的锁,通过滑动或铰接的锁梁来固定物品
A detachable lock that can be used to secure something by means of a sliding or hinged shackle
可拆卸的锁；有一个铰接的锁梁,可穿过搭扣的锁环或链条的链环,然后扣上
a detachable lock; has a hinged shackle that can be passed through the staple of a hasp or the links in a chain and then snapped shut
I forgot the key to my padlock, so I couldn't open the storage room.
我忘了挂锁的钥匙，所以打不开储藏室。
The chest was secured with a strong padlock and a metal chain.
箱子用一把结实的挂锁和一条金属链锁好了。
All the lockers had identical padlocks, so I checked the number on mine.
所有储物柜都挂着相同的挂锁，所以我核对了自己那把的编号。
padlock 作名词时是可数名词，常与 on 连用表示某物上的挂锁。
The gate has a padlock on it.
大门上有一把挂锁。
padlock 作动词时是及物动词，直接接被锁的对象。
They padlocked the gate to keep trespassers out.
他们用挂锁锁上大门以防闯入者。
可用 shut/closed 作宾补，强调锁上后处于关闭状态。
She padlocked the shed shut after the robbery.
抢劫发生后，她用挂锁把棚屋锁死。
Not this
I padlocked on the door.
Use this
I padlocked the door.
padlock 作动词时是及物动词，后面必须直接跟被锁的对象（如门、箱子）；汉语‘在…上挂锁’容易让人误加介词 on，但英语中不能说 padlock on the door。
Not this
I put a paddock on the gate.
Use this
I put a padlock on the gate.
paddock（围场）与 padlock（挂锁）是形近词但意思不同；这里要表达的是门上的挂锁，应写 padlock。
Not this
There are two padlock on the table.
Use this
There are two padlocks on the table.
padlock 是可数名词，复数须加 -s；‘两个挂锁’要说 two padlocks，不能沿用汉语无复数的习惯。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
给某物上挂锁
She put a padlock on the gate to keep strangers out.
她在门上挂了挂锁，以防陌生人进入。
撬开挂锁；弄断挂锁
The thief broke the padlock with a crowbar.
小偷用撬棍撬开了挂锁。
用挂锁锁好某物
Make sure you secure the shed with a padlock overnight.
晚上一定要用挂锁把棚屋锁好。
一把结实的挂锁
The chest was protected by a heavy padlock.
箱子用一把结实的挂锁保护着。
挂锁钥匙
I can't find the padlock key anywhere.
我哪儿也找不到挂锁钥匙。
啪地一声锁上挂锁
He snapped the padlock shut on the suitcase.
他啪地一声锁上了手提箱上的挂锁。
Use padlock naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆联想：挂锁扁扁的像块小垫子(pad)贴在门扣上锁住(lock)，pad＋lock就是“挂锁”。
语域：neutral 常见场景：school、gym、travel 作名词指挂锁时，正式和非正式场合都较常见；多用于学校、健身房或旅行等需要临时锁物品的场景，日常对话和书面说明中都比较自然。
与 padlock 尾音 /lɑk/ 同韵的词有：lock /lɑk/、clock /klɑk/、block /blɑk/、flock /flɑk/、stock /stɑk/。注意 paddock /ˈpædək/ 拼写相似，但发音不同，最后读作 /ək/ 而非 /ɑk/。
Dictionary facts from ECDICT, WIKTIONARY.