核心差别
beg 强调beg 指以谦卑或急切的方式请求或乞求，plead 则侧重plead 是一个动词
使用场景对比
| 对比方面 | beg | plead |
|---|---|---|
| 核心含义 | beg 指以谦卑或急切的方式请求或乞求，常用于正式或非正式场合，表达强烈的需求或恳求。 | plead 是一个动词，指在法庭上为某人辩护，或恳切地请求某事，常带有情感或法律色彩。 |
| 词性 | 动词 | 动词 |
| 使用语域 | beg 常用于 beg sb. to do sth. 句型，表示请求某人做某事；也可直接接宾语，如 beg forgiveness。 | plead 常用于 plead with someone to do something（恳求某人做某事）或 plead guilty/not guilty（认罪/不认罪）的句型中，前者强调恳求，后者是法律术语。 |
对比例句
He had to beg his friend to lend him some money for the bus fare.
他不得不请求朋友借他一些钱付公交车费。
The child begged her mother for one more cookie before bedtime.
孩子睡前恳求妈妈再给一块饼干。
She pleaded with her parents to let her go to the party.
她恳求父母让她去参加派对。
He pleaded for more time to finish the project.
他恳求更多时间来完成这个项目。
常见误用提醒
使用 beg：I beg you helping me. → I beg you to help me. (错误：beg 后接宾语和动词时，应用不定式 to do，而不是动词原形或动名词。正确用法是 beg sb. to do sth.。)
使用 beg：He begged some money from me. → He begged for some money from me. (错误：当 beg 表示乞求某物时，常需与介词 for 连用，如 beg for something。from 表示来源，但 for 不可省略以避免歧义。)
使用 plead：I plead him to help me. → I pleaded with him to help me. (错误在于缺少介词 with；plead 作恳求时，常用 plead with someone to do something 结构，表示向某人恳求。)