Principal parts
n. （英语）动词的主要变化形式
📖 牛津释义
principal parts
(in English) those forms of a verb (ie the infinitive, past tense and past participle) from which all other forms can be derived （英语中动词的）主要部分（即不定式、 过去式和过去分词）.
🧩 词语组成解析
principal
['prɪnsəpl]
adj. 最重要的;主要的;资本的;本金的;
n. 首长，负责人;主要演员，主角;[法]委托人，当事人;本金;
prin主要的+cip拿，抓，握住+al形容词后缀 → 主要的；首要的
n. 零件, 部件
🗣️ 情景例句
That's a good buy.
那买得便宜。
How many dozen are you going to take?
你要拿几打？
When reports came into London Zoo that a wild puma had been spotted forty-five miles south of London, they were not taken seriously.
当伦敦动物园接到报告说，在伦敦以南45英里处发现一只美洲狮时，这些报告并没有受到重视。