1
verb + threateningly
threateningly 常紧接动词之后，修饰动作的方式。
He gestured threateningly at the crowd.
他威胁地向人群做手势。
威胁地；胁迫地；危险地
先理解核心含义，再看它在真实句子里的用法。
威胁地；胁迫地；危险地
in a menacing manner
He gestured threateningly at the crowd.
他威胁地向人群做手势。
威胁地；恐吓地。
In a threatening manner.
He stared at me threateningly across the table.
他隔着桌子威胁地盯着我。
The dog growled threateningly when the stranger approached.
陌生人走近时，那只狗威胁地低吼起来。
She moved threateningly toward the door, making everyone step back.
她威胁地朝门口移动，逼得大家都后退。
threateningly 常紧接动词之后，修饰动作的方式。
He gestured threateningly at the crowd.
他威胁地向人群做手势。
threateningly 也可放在主语与主要动词之间，和动词后位置意思基本相同，语气更强。
The intruder threateningly raised his fist.
闯入者威胁地举起了拳头。
修饰形容词时，threateningly 表示“具有威胁特征地”，常译作“...得带有威胁性”。
His voice was threateningly low.
他的声音低得带有威胁性。
Not this
He looked at me threatening.
Use this
He looked at me threateningly.
look at 是动词短语，需要副词来修饰动作，而 threatening 是形容词，不能修饰动词；应改为副词 threateningly（威胁地）。
Not this
He gave me a threateningly look.
Use this
He gave me a threatening look.
名词 look 前应用形容词 threatening（威胁的）作定语，副词 threateningly 不能修饰名词，因此需要改为形容词形式。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
威胁性地逼近
Dark storm clouds loomed threateningly over the city.
乌云密布，威胁性地笼罩在城市上空。
恶狠狠地瞪眼
The guard glared threateningly at the intruder.
警卫恶狠狠地瞪着闯入者。
步步紧逼
The dog advanced threateningly toward the stranger.
那条狗步步紧逼地朝陌生人走去。
威胁性地挥舞
He waved the stick threateningly at the crowd.
他威胁性地向人群挥舞棍子。
用威胁的语气说话
She spoke threateningly about the consequences.
她语气威胁地谈到后果。
Use threateningly naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
threaten（威胁）加 ing 和 ly，想象恶犬露牙逼近，让人威胁地后退。
语域：neutral 常见场景：文学叙事、新闻报道 该词多用于书面或正式描述，表示以威胁或恐吓的方式；在日常口语中比较少见，通常出现在小说或新闻等较正式语境中。
These words all end with the same unstressed suffix -ingly /ɪŋli/ as threateningly. They do not rhyme with threateningly because each has a different stressed syllable (threateningly is stressed on /θret/, whereas lovingly is stressed on /lʌv/, surprisingly on /praɪz/, increasingly on /kriːs/, willingly on /wɪl/, strikingly on /straɪk/, and alarmingly on /lɑːm/). Beware the lookalikes threat /θret/, threaten /ˈθretən/, and threatening /ˈθretənɪŋ/ (or /ˈθretnɪŋ/): they lack the final -ly /li/ and sound different.
Dictionary facts from ECDICT, WIKTIONARY.