1
tighten + sth
可用于具体或抽象对象，如 tighten the rules（严格规定）。
He tightened the rope.
他拉紧了绳子。
使变紧；拧紧；拉紧
tightening — present participle of tighten
先理解核心含义，再看它在真实句子里的用法。
使变紧；拧紧；拉紧
make something tight or tighter
He tightened the rope.
他拉紧了绳子。
及物用法
使更紧
To make tighter.
使变紧或更紧
make tight or tighter
变紧
To become tighter.
变紧或更紧
become tight or tighter
tighten
Base
原形
tightens
3rd person
第三人称单数
tightening
-ing
现在分词
tightened
Past
过去式
tightened
Past participle
过去分词
He tightens the screws before driving.
他在开车前拧紧螺丝。
She tightened her grip on the rope.
她抓紧了绳子。
They have tightened security at the airport.
他们加强了机场的安全措施。
规则动词，过去式和过去分词加-ed。
You should tighten the screws before you use the chair.
使用这把椅子之前，你应该把螺丝拧紧。
AI contextual example
The rope will tighten if you pull it.
如果你拉那根绳子，它就会变紧。
AI contextual example
The government decided to tighten the rules on online privacy.
政府决定收紧网络隐私规定。
AI contextual example
Tighten the wire
把铁丝拉紧
WordNet
可用于具体或抽象对象，如 tighten the rules（严格规定）。
He tightened the rope.
他拉紧了绳子。
She tightened the strap around her waist.
她把带子系紧在腰上。
常与 up 连用，表示变紧或绷紧。
The rope tightened as it dried.
绳子干了之后变紧了。
Not this
You need to tight the belt.
Use this
You need to tighten the belt.
tight是形容词，不能直接用作动词；应使用动词tighten表示'使变紧'。
Not this
Tighten on the lid.
Use this
Tighten the lid.
tighten是及物动词，直接接宾语，不需要介词on。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
拧紧螺丝；加强控制
The mechanic tightened the screws on the wheel.
机械师拧紧了车轮上的螺丝。
系紧绳结
He tightened the knot to secure the rope.
他系紧绳结以固定绳索。
加强安保
The airport tightened security after the threat.
机场在威胁后加强了安保。
收紧规则
The government tightened rules on pollution.
政府收紧了污染规则。
握紧；加强控制
She tightened her grip on the handlebar.
她握紧了车把。
勒紧腰带；节省开支
During the recession, many families had to tighten their belts.
经济衰退期间，许多家庭不得不勒紧腰带过日子。
勒紧腰带；节衣缩食
Due to the economic downturn, many families have to tighten their belts.
由于经济不景气，许多家庭不得不节衣缩食。
施加压力；加强控制
The government decided to tighten the screws on tax evasion.
政府决定加强对逃税行为的打击。
加强；使更严格
The company needs to tighten up its security measures.
公司需要加强安全措施。
系紧安全带，今晚将是个颠簸之夜。
She told him to tighten his seat belt.
她让他系紧安全带。
收紧，收紧你的爱。
He sang, 'Tighten up on your love.'
他唱道：‘收紧你的爱。’
发长 /aɪ/ 音 (如 high, light)
Same pattern, same sound
Use tightening naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
tight（紧）+ en（使）→ 使变紧，好比拧紧瓶盖。
该词在日常及技术语境中均适用，无明显语域限制，可指勒紧物品或使关系、规定等变严格。
可及物或不及物。及物时后接宾语，如 tighten the screws；不及物时主语自身变紧，如 The rope tightened.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.