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
I've been working like a madman all day.
我今天一整天都像个疯子一样工作。
I heard such a funny story this morning.
今天早上我听到一件十分有趣的事。
No matter what the conditions were, he believed that a car should be driven as fast as it could possibly go.
他认为不管路面情况如何，车必须以最高速度前进。