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somebody + verb + by chance
by chance在动词后表示“偶然地”。
I met him by chance.
我偶然遇见了他。
偶然；意外地
先理解核心含义，再看它在真实句子里的用法。
偶然；意外地
without advance planning; by accident; through chance
I met him by chance.
我偶然遇见了他。
没有事先计划；偶然地
without advance planning
碰巧；偶然地
by accident
通过偶然；碰巧
through chance,
I met my old friend by chance at the supermarket.
我在超市偶然遇到了我的老朋友。
She discovered the lost ring by chance while cleaning the attic.
她在清理阁楼时偶然发现了丢失的戒指。
He got the job by chance after sending a random application.
他在随意投了一份申请后，偶然得到了这份工作。
by chance在动词后表示“偶然地”。
I met him by chance.
我偶然遇见了他。
置于句首起强调作用。
By chance, I found the key.
碰巧，我找到了钥匙。
用于疑问句表示“也许”。
Do you by chance have a spare pen?
你也许有多余的笔吗？
Not this
Can you help me by chance?
Use this
Can you help me by any chance?
在礼貌请求中，应使用“by any chance”而非“by chance”。“by chance”意为“偶然”，而“by any chance”用于征得许可或请求帮助。
Not this
I by chance saw him.
Use this
I saw him by chance.
“by chance”作为副词短语，通常放在句末或句首，而不应放在主语和动词之间。原句语序不符合英语习惯，需调整。
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常用于句首或句末，表示偶然发生或可能性
Dictionary facts from ECDICT.