knock
knock — 名詞
- knocksingular
- knocksplural
1. a short, sharp sound produced when a hand or object hits a hard surface, especia
敲門聲
手或物體撞擊硬物發出的短促聲響
a short, sharp sound produced when a hand or object hits a hard surface, especially a door or window, often to get someone's attention
Élise heard a knock at the door and went to answer it.
Élise 聽到敲門聲，便走去開門。
knock at the door — common pattern for entry
There was a loud knock on the classroom window, and everyone turned to look.
教室窗戶傳來大聲敲擊，所有人都轉頭去看。
A soft knock came from the bedroom, but nobody was inside.
臥室傳來輕輕的敲門聲，但裡面沒有人。
The postman gave three quick knocks before leaving a package by the door.
郵差快速敲了三下門，然後把包裹留在門口。
文法句型
a knock + at/on + [door/window]
用法筆記
Countable noun, usually singular when referring to a single incident. Often preceded by a possessive form of the person who hears it (e.g., 'I heard a knock'; 'She was woken by a knock').
常見錯誤
2. a hard hit from an object or person that lands on a body part or surface, often
撞擊；碰撞
硬物撞到身體或表面的衝擊
a hard hit from an object or person that lands on a body part or surface, often causing pain or damage
The knock on his knee left a purple bruise that lasted for a week.
膝蓋上的撞擊留下了一片持續一週的瘀青。
knock on + body part for impact location
Beatriz took a hard knock to the shoulder when she slipped on the wet floor.
Beatriz 在濕滑的地板上滑倒時，肩膀重重撞了一下。
take a knock — collocation for receiving a hit
The wooden table had several knocks and scratches from years of use.
那張木桌因多年使用留下了好幾處撞痕和刮痕。
Vivek got a nasty knock on the head when the ladder fell sideways.
梯子側倒時，Vivek 的頭部狠狠地撞了一下。
文法句型
a knock + to/on + [body part]
用法筆記
Countable noun. Often used with 'take a knock' (receive a blow) or 'get a knock' (suffer a blow). Not used for deliberate violent attacks such as punches in a fight — 'punch' or 'blow' would be more natural there.
常見錯誤
3. unkind or unfair critical remarks about a person, idea, or thing
批評；責難
針對人或事物不公平的負面評論
unkind or unfair critical remarks about a person, idea, or thing
The biggest knock against the new café is that the coffee is too expensive.
對那家新咖啡館最大的批評是咖啡太貴了。
the biggest knock against — common critical framing
Sivan accepted the knocks from the audience and used them to improve her presentation.
Sivan 接受了觀眾的批評，並藉此改進她的簡報。
One common knock on the proposal is that it does not address safety concerns.
對這項提案一個常見的批評是它沒有考慮到安全問題。
The mayor has taken plenty of knocks from the press over the new policy.
市長因這項新政策受到媒體的諸多批評。
- praise
expression of approval, the opposite of criticism
文法句型
a/the knock + against + [person/thing]
用法筆記
Countable noun, found mostly in informal contexts such as journalism, reviews, and everyday conversation. Often appears in the structure 'the knock against [something] is [criticism]'.
常見錯誤
4. a negative event that damages someone's confidence, hopes, plans, or wellbeing
打擊；挫折
損害信心或計劃的負面事件
a negative event that damages someone's confidence, hopes, plans, or wellbeing
Losing her job was a serious knock to Valentina's confidence.
失去工作對 Valentina 的自信心是一個沉重的打擊。
knock to confidence — metaphor for emotional setback
The team's early defeat was a huge knock to their championship hopes.
球隊在比賽初期就落敗，對他們的冠軍夢是一個巨大打擊。
Small businesses suffered a severe knock when the local factory closed down.
當地工廠關閉後，小企業受到了嚴重的打擊。
Failing the exam was a knock, but Wren studied harder and passed the next time.
考試沒過是個打擊，但 Wren 更加努力學習，下一次就通過了。
- boost
something that lifts confidence or spirits
文法句型
a knock + to + [emotion/confidence/plans]
用法筆記
Countable noun, almost always singular. The pattern 'a knock to [abstract noun]' is very common. Stronger than 'disappointment' — implies actual damage or loss rather than simply feeling let down.
常見錯誤
knock — 動詞
- knockpresent simple I / you / we / they
- knockshe / she / it
- knockedpast simple
- knocking-ing form
1. to strike a hard surface such as a door or window with your hand or an object, e
敲；擊
敲門或敲打硬物以引起注意
to strike a hard surface such as a door or window with your hand or an object, especially to get someone's attention or announce your presence
Élise knocked on the office door before stepping inside.
Élise 在進辦公室之前先敲了敲門。
knock on + door — most common intransitive pattern
A delivery driver was knocking loudly at the front gate, but nobody heard.
一名送貨員在大門前用力敲門，但沒有人聽見。
Takeshi knocked three times and then pushed the door open slowly.
Takeshi 敲了三下門，然後慢慢把門推開。
The teacher knocked her pen against the desk to get the class's attention.
老師用筆敲了敲桌子，以引起全班同學的注意。
文法句型
knock + on/at + [door/window]
knock + [object] + on + [surface]
用法筆記
When used intransitively, the preposition is 'on' (American and British) or 'at' (more common in British English for doors). When transitive, the object is the thing you strike the surface with, not the surface itself (e.g., 'knock your fist on the table', not 'knock the table').
常見錯誤
2. If an engine knocks, it produces a repeated metallic tapping sound caused by imp
爆震
引擎因燃油燃燒異常發出金屬敲擊聲
If an engine knocks, it produces a repeated metallic tapping sound caused by improper fuel burning or a faulty component.
The old truck's engine started knocking after Mert filled it with cheap fuel.
Mert 加了便宜的燃油後，那輛舊卡車的引擎開始發出爆震聲。
engine started knocking — common verb + start pattern
Valentina heard the engine knocking on the highway and pulled over immediately.
Valentina 在高速公路上聽到引擎發出爆震聲，立刻靠邊停車。
A knocking engine often means the spark plugs need to be replaced soon.
引擎爆震通常代表火星塞需要更換了。
If your engine knocks, take it to a mechanic before the damage gets worse.
如果引擎發出爆震聲，趁問題惡化前送去給技師檢查。
文法句型
[engine] + knocks
[engine] + is knocking
用法筆記
Intransitive only — the subject is always the engine or vehicle. The technical term for this condition is 'engine detonation' or 'engine pinging'. Not used metaphorically (you cannot say 'my stomach is knocking' to mean growling).
常見錯誤
3. to make repeated tapping or banging sounds inside a building's pipes, radiator,
發出噠噠聲
水管或暖氣系統因壓力異常發出聲響
to make repeated tapping or banging sounds inside a building's pipes, radiator, or heating system, often due to temperature changes, trapped air, or water pressure
The pipes in the bathroom knock every time someone turns on the hot water.
每次有人打開熱水，浴室的水管就會發出噠噠聲。
pipes knock — subject + intransitive verb pattern
Sofie called the plumber because the radiator was knocking all night.
Sofie 打電話叫水電工來，因為暖氣片整晚都在發出敲擊聲。
The heating system knocks loudly when it first turns on in the morning.
暖氣系統在每天早上啟動時會大聲敲響。
Old houses often have knocking pipes that need to be fixed by a professional.
老房子經常有水管發出敲擊聲的問題，需要請專業人員來維修。
文法句型
[pipe/radiator/heating] + knocks
用法筆記
Intransitive only. The typical problem is called 'water hammer' in plumbing. Distinguished from verb sense 2 (engine noise) by the subject: pipes/radiators vs. engines. Common in home-maintenance discussions.
常見錯誤
4. to strike someone or something with enough force to make them move, fall, leave
撞；碰倒
用力撞擊使物體移動或倒下
to strike someone or something with enough force to make them move, fall, leave a position, or enter a different state
Christopher accidentally knocked the glass off the table with his elbow.
Christopher 不小心用手肘把桌上的杯子撞掉了。
knock + object + off + surface — direction pattern
The strong wind knocked several flower pots off the balcony railing.
強風把陽台欄杆上的好幾個花盆吹倒了。
Femi knocked the ball across the field during the final minute of the game.
Femi 在比賽的最後一分鐘把球打過了球場。
A cyclist came around the corner and nearly knocked the old woman over.
一名自行車騎士從轉角衝出來，差點把老婦人撞倒。
The toddler knocked a whole stack of picture books off the library shelf.
學步的小孩把一整疊圖畫書從圖書館的書架上碰倒了。
文法句型
knock + [object] + [adverb/preposition]
knock + [object] + off/over/down/into + [target]
用法筆記
Transitive verb with an object (the person/thing hit) and typically a directional adverb or prepositional phrase (off, over, down, into, across). The direction component is almost always required — 'I knocked the cup' is incomplete; 'I knocked the cup off the table' is correct.
常見錯誤
5. to remove a wall that separates two rooms, usually to create one larger living s
打通；拆除
拆掉房間之間的牆以擴大空間
to remove a wall that separates two rooms, usually to create one larger living space
The Watanabes decided to knock the wall between the kitchen and the dining room.
渡邊家決定打通廚房和餐廳之間的牆壁。
knock + the wall between [room] and [room]
The Watanabes paid a builder to knock through from the living room into the study.
渡邊家請了一名工人把客廳和書房之間的牆打通。
If you knock down the dividing wall, the ground floor will feel much more spacious.
如果把隔牆拆掉，一樓會感覺寬敞很多。
The couple knocked two small bedrooms into one large master bedroom.
這對夫妻把兩間小臥室打通成一間大的主臥室。
- build
to construct a wall, the opposite of removing one
文法句型
knock + [wall] + down/through
knock through + [prepositional phrase]
用法筆記
Often used as a phrasal verb 'knock through' (remove part of a wall to connect rooms) or 'knock down' (completely demolish a wall). Not used for removing external walls (that is 'demolish').
常見錯誤
6. to say unkind or unfair things about someone or something, often in a repeated o
批評；數落
不公平地對人或事物說負面話語
to say unkind or unfair things about someone or something, often in a repeated or habitual way
Critics knocked the film for its weak storyline, but audiences loved it anyway.
影評人批評這部電影的情節薄弱，但觀眾們還是很喜歡。
knock + [something] + for + [reason] — criticism pattern
Mert's colleagues are always knocking his ideas without offering better ones.
Mert 的同事總是在批評他的點子，卻提不出更好的方案。
Diya knocked the city's bike lane plan at the town hall meeting, but the mayor defended it.
Diya 在市政會議上批評市府的自行車道計畫，但市長為之辯護。
Stop knocking yourself all the time — you did an excellent job on the project.
別再一直數落自己了——你在這個專案上做得非常好。
- praise
to express warm approval or admiration
- compliment
to politely express praise
文法句型
knock + [person/thing]
always + knocking + [person/thing]
用法筆記
Informal verb, more common in spoken English and journalism than in formal writing. Often conveys that the criticism is unfair or excessive. The reflexive form 'knock yourself' (criticize yourself) is very common in spoken encouragement.