do

Compared meaning: to complete a task or action (verb).

比较义项：执行、完成任务或行动（动词）。

• do 本词

  The everyday, general word for completing any action or task; very informal, used for a huge range of ordinary activities like chores or homework without specifying method or standard.

  do是最日常、最通用的词，表示完成任何行动或任务；非常口语化，可用于家务、作业等各种普通活动，不强调具体方法或标准。

  I still need to do my homework before dinner.

  我晚饭前还得做作业。

• perform

  More formal than do; implies carrying out a task or duty skillfully and according to expected standards, often in professional, ceremonial, or technical settings.

  比do更正式；表示按照预期标准熟练地完成任务或职责，常用于专业、礼仪或技术性场合。

  The surgeon performed a difficult operation with steady hands.

  这位外科医生双手沉稳地完成了一台高难度手术。

• execute

  The most formal and precise; implies carrying out a plan, order, or strategy exactly as designed, common in business, legal, military, and technical contexts.

  最正式、最精确；表示完全按照设计执行计划、命令或策略，常见于商业、法律、军事和技术语境。

  The company will execute the new marketing strategy next quarter.

  公司将在下个季度执行新的营销策略。

Do, perform, and execute can all mean to complete a task, but formality differs. Do is casual and general. Perform is more formal: doing a task skillfully, by a standard or duty. Execute is most formal: carrying out a plan, order, or strategy exactly.

这三个词都可以表示“完成某事、执行任务”，但正式程度和语境不同：do最口语化，几乎可以代替任何具体动词；perform更正式，强调按标准或职责完成技巧性任务；execute最正式，强调精确地按计划、命令或策略执行。这里不比较perform“登台表演”的意思，也不比较execute“处死”的意思。