1
swiftly + verb (before the verb)
副词 swiftly 通常位于动词前，强调动作迅速。
She swiftly completed the task.
她很快地完成了任务。
迅速地；飞快地
先理解核心含义，再看它在真实句子里的用法。
迅速地；飞快地
quickly; in a swift manner
She swiftly completed the task.
她很快地完成了任务。
快速地；敏捷地。
In a swift manner; quickly; with quick motion or velocity; fleetly.
迅速地
in a swift manner
She swiftly finished her homework before dinner.
她在晚饭前迅速完成了作业。
AI contextual example
He swiftly answers emails every morning.
他每天早上迅速地回复邮件。
AI contextual example
The train is moving swiftly through the countryside.
火车正迅速驶过乡村。
AI contextual example
she moved swiftly
她迅速移动。
WordNet
副词 swiftly 通常位于动词前，强调动作迅速。
She swiftly completed the task.
她很快地完成了任务。
副词位于动词后，同样表示动作的方式。
The athlete ran swiftly.
运动员跑得很快。
在被动语态中，swiftly 修饰动词的过去分词。
The problem was swiftly resolved.
问题被迅速解决了。
Not this
He is a swiftly runner.
Use this
He is a swift runner.
中文学习者可能受副词修饰动词的规则影响，错误地将副词 'swiftly' 用于修饰名词 'runner'。英语中，修饰名词应用形容词 'swift'，而副词 'swiftly' 只能修饰动词、形容词或其他副词。
Not this
I will call you swiftly after the meeting.
Use this
I will call you soon after the meeting.
中文'很快'可同时表达'迅速'（强调动作快）和'不久'（强调时间短），导致学习者误用'swiftly'表示时间上的'不久'。'swiftly'强调动作快速进行，而'soon'强调时间上的短暂间隔。此处表示会议结束后不久，应用'soon'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
迅速移动
The cheetah can swiftly move across the savanna.
猎豹能迅速穿越稀树草原。
迅速回应
The company swiftly responded to the customer's complaint.
公司迅速回应了客户的投诉。
迅速变化
The weather can swiftly change in this region.
这个地区的天气能迅速变化。
迅速成为
He swiftly became the team leader after joining.
他加入后迅速成为了团队领导。
Use swiftly naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：swift（雨燕）飞行极快，后缀 -ly 变为副词，意为'很快地'。
通常用于书面和口语，表示动作快速，中性语体。
All listed words share the -ly spelling suffix, but none rhyme with 'swiftly' (/swɪftli/) because the stressed vowel differs. 'Softly' and 'swiftly' both end in -ftly, but their vowels (/ɒ/ vs /ɪ/) differ, so they are not true rhymes. 'Promptly' has a similar spelling but different consonant cluster (-ptly vs -ftly).
Dictionary facts from ECDICT, WIKTIONARY.