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
If I were you, I'd try one of the newspaper stands.
如果我是你，我会到一个书报亭去看看。
Hello. May I speak to Mr. Green?
你好，我找格林先生。
I've just had a cup, thank you.
我刚喝了一杯，谢谢。