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eavesdrop on sth
eavesdrop 是不及物动词，后接听的对象时用 on；它本身已含“偷偷”之意，通常不必再加 secretly。
She eavesdropped on their phone conversation.
她偷听了他们的电话交谈。
偷听
eavesdropped — past of eavesdrop
先理解核心含义，再看它在真实句子里的用法。
偷听
listen secretly to a private conversation without the speaker's knowledge
She eavesdropped on their phone conversation.
她偷听了他们的电话交谈。
故意偷听本不应听到的谈话；窃听
To hear (intentionally) a conversation one is not intended to hear; to listen in.
窃听其他生物的叫声以加以利用
To listen for another organism's calls, so as to exploit them.
eavesdrop
Base
原形
eavesdrops
3rd person
第三人称单数
eavesdropping
-ing
现在分词
eavesdropped
Past
过去式
eavesdropped
Past participle
过去分词
She often eavesdrops on her neighbors' conversations.
她经常偷听邻居们的谈话。
He eavesdropped on their meeting yesterday.
他昨天偷听了他们的会议。
I have eavesdropped on this phone call for ten minutes.
我已经偷听这个电话十分钟了。
规则动词；常用于表示暗中偷听他人谈话。
Please don't eavesdrop on other people's private conversations.
请不要偷听别人的私人谈话。
She eavesdropped on her neighbors' argument from the balcony.
她从阳台上偷听了邻居的争吵。
I think someone is eavesdropping on us through the wall.
我觉得有人正隔着墙偷听我们说话。
eavesdrop 是不及物动词，后接听的对象时用 on；它本身已含“偷偷”之意，通常不必再加 secretly。
She eavesdropped on their phone conversation.
她偷听了他们的电话交谈。
此结构表示偷听到某人正在做某事，on 后接人，再接现在分词；现在分词不可改为动词原形。
He eavesdropped on his parents discussing his future.
他偷听到父母在讨论他的未来。
Not this
I eavesdropped their conversation.
Use this
I eavesdropped on their conversation.
eavesdrop 是不及物动词，不能直接接宾语；表示偷听某人或某事时需加介词 on，因此应说 eavesdrop on their conversation。
Not this
She eavesdropped to their discussion.
Use this
She eavesdropped on their discussion.
eavesdrop 后接偷听对象时要用介词 on，而不是 to；表示“偷听他们的讨论”应说 eavesdrop on their discussion。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
偷听谈话
She tried to eavesdrop on the conversation between the two managers.
她试图偷听两位经理之间的谈话。
偷听某人说话
He was caught eavesdropping on his sister.
他被发现偷听妹妹说话。
偷听电话
It is illegal to eavesdrop on a phone call without permission.
未经允许偷听电话是违法的。
偷听私人谈话
They used a hidden device to eavesdrop on private conversations.
他们用隐藏的设备偷听私人谈话。
偷听邻居的动静
The old man liked to eavesdrop on the neighbors from his balcony.
那位老人喜欢从阳台上偷听邻居的动静。
偷听会议内容
A journalist managed to eavesdrop on the meeting through an open window.
一名记者透过开着的窗户设法偷听了会议内容。
Use eavesdropped naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆联想：eaves（屋檐）+drop（滴落）→ 想象躲在屋檐下偷听，水滴差点暴露你。
语域：neutral 常见场景：private conversation、phone call、meeting eavesdrop 作动词时属于中性表达，通常用于指有意偷听他人私下谈话，多用于日常口语和叙述，正式文件中较少见。
eaves /iːvz/ 与 eavesdrop 的词首音节完全相同；leaves /liːvz/ 与 eaves 同韵。drop /drɒp/ 是 eavesdrop 的最后一个音节，但该音节在单词中不重读；crop、stop 与 drop 同韵。整个单词重音在第一个音节，因此这些词都不与 eavesdrop 整体构成韵脚。
Dictionary facts from ECDICT, WIKTIONARY.