Principal parts refer to the main forms of a verb that are used to create various tenses and aspects in a language. In English, the principal parts typically include the base form or infinitive, the past tense form, and the past participle form. For example, for the verb "to run," the principal parts are "run" as the base form, "ran" as the past tense, and "run" as the past participle. Understanding the principal parts of a verb is essential for correctly conjugating verbs in different tenses, allowing for accurate expression of actions and events in speech and writing.

“principal parts”的英语定义和含义

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