constantly + verb
副词修饰动词，表示动作频繁发生。
He constantly checks his phone for messages.
他不停地查看手机消息。
不变地；始终如一地
持续不断地,持久地；在每种情况下都没有变化或改变；定期反复地,有规律地重复出现；不间断地
持续不断地,持久地
In a constant manner; occurring continuously; persistently.
在每种情况下都没有变化或改变
without variation or change, in every case
定期反复地,有规律地重复出现
Recurring regularly.
不间断地
without interruption
不变地,始终如一地
In an unchangeable or invariable manner; in every case.
The weather here is constantly changing, so always bring an umbrella.
这里的天气总是在变化，所以一定要带伞。
用法提示：副词 constantly 修饰现在分词 changing，表示“不断地、总是”。
AI contextual example
She checks her phone constantly during work.
她工作时不停地看手机。
用法提示：副词 constantly 修饰动词 checks，表示“频繁地、不停地”。
AI contextual example
He constantly repeats the same story at every family dinner.
他每次家庭聚餐都不断重复同一个故事。
用法提示：副词 constantly 位于动词 repeats 前，表示“反复地、总是”。
AI contextual example
副词修饰动词，表示动作频繁发生。
He constantly checks his phone for messages.
他不停地查看手机消息。
修饰形容词，表示状态持续。
She is constantly busy with work.
她一直忙于工作。
进行时结构，强调动作持续进行。
They are constantly arguing about money.
他们不停地为钱争吵。
更通用，可指任何频率的重复；constantly强调连续不断
与constantly非常接近，常可互换，但continually隐含短暂停顿
语气更强，强调无休止，一般用于负面语境
更强调时间上的永恒性，较正式
强调每次均相同，而非频率；与constantly含义略有不同
grammar · medium
易错句子I have a constantly headache.
正确表达I have a constant headache.
用副词 'constantly' 修饰名词 'headache' 是错误的；修饰名词需用形容词 'constant'。
grammar · medium
易错句子The noise is constantly.
正确表达The noise is constant.
系动词后应用形容词作表语，而非副词。'constantly' 是副词，应改为形容词 'constant'。
对应'不变地，总是'的含义，表示频率低，非持续
对应'不断地'的含义，表示频率极低
对应'持续地'的含义，强调有中断、非连续
constantly 强调反复发生或持续不变，而 continuously 强调无间断的连续。
constantly 可表示‘时常地’，但 frequently 侧重高频率，未必表示不变。
不断变化
The weather here is constantly changing.
这里的天气不断变化。
不断发展
Technology is constantly evolving.
技术在不断发展。
持续监控
The patient's condition is constantly monitored.
病人的状况被持续监控。
不断更新
The database is constantly updated with new information.
数据库不断更新新信息。
一直在移动
She is constantly on the move for work.
她因工作一直在移动。
不断改进
We are constantly improving our services.
我们不断改进我们的服务。
忙个不停
She is constantly on the go, juggling work and family.
她总是忙个不停，既要工作又要照顾家庭。
一直紧张不安
He has been constantly on edge since the accident.
自从那次事故后，他一直紧张不安。
总是意见不合
The two leaders are constantly at odds over policy.
两位领导人在政策上总是意见不合。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.