Phrase

run across

verb

跑着穿过；跑过

To cross by running.

偶然发现；碰见；跑着穿过；偶然发现；偶遇。；偶遇

In use

I ran across an old friend at the market yesterday.

我昨天在市场偶遇了一个老朋友。

The children ran across the playground to get to the swings.

孩子们跑着穿过操场去荡秋千。

She ran across a rare book in the library while researching.

她在图书馆研究时偶然发现了一本罕见的书。

表示偶然遇到某人或某物，常用于口语。

I ran across an old friend at the market.

我在市场偶遇了一位老朋友。

表示跑着穿过某个地方，强调动作路径。

The dog ran across the field.

狗跑着穿过了田野。

base run across · third person runs across · -ing running across · past ran across · past participle run across

run across 为短语动词，动词 run 为不规则变化，across 保持不变。

I ran across with my teacher at the mall.I ran across my teacher at the mall.

错误：在短语动词 run across 后错误添加介词 with（受中文‘偶遇某人’中不需要介词的影响）。改正后 run across 直接接宾语，表示‘偶遇’，无需额外介词。

I ran across the forest to get to the lake.I ran through the forest to get to the lake.

错误：用 run across 表示‘跑着穿过森林’不自然，通常 run across 用于横穿道路或开阔区域（如 street, field），而穿过树林或密集区域应用 run through。run across 更常表示‘偶遇’。

come across: 偶遇 · run across 和 come across 均可表示‘偶遇’，但 run across 更强调偶然碰见，而 come across 则侧重无意中发现或遇到，两者在用法上可互换，但 run across 更常见于口语。
run into: 偶遇 · run across 和 run into 都表示‘偶然遇见’，但 run into 更常用，且可指撞到某人或物，而 run across 仅指遇见。
run over: 碾过，跑到...上 · run across 和 run over 形式相似，但 run across 表示‘偶遇’或‘跑着穿过’，而 run over 表示‘碾过’或‘溢出’，意义完全不同。

作“偶遇”解时宾语须紧接 across，不可拆分；作“跑着穿过”解时 across 后接地点。

页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。

Dictionary facts from ECDICT, WIKTIONARY.