缺它不可
兩個意思其實是同一個畫面的兩面：一是事情本身少不了某樣東西，二是規則開口說『你必須照辦』——後者只是把『非有不可』從物換成了命令。
need, require · verb · B1
To need something because it is necessary or important.
需要
核心畫面
You can hold require as 'this thing cannot go without that thing.' Something is missing, and the situation simply will not work until it is supplied. A plant requires water; a job requires skill — the word points at a gap that has to be filled before things can proceed.
可以把 require 想成「少了它就不行」。某樣東西是缺不得的，情況非得補上它才走得下去——植物 require …更多收起
可以把 require 想成「少了它就不行」。某樣東西是缺不得的，情況非得補上它才走得下去——植物 require 水、一份工作 require 某種技能。核心畫面比較像指著一個必須先填上的缺口：不是「想要」，而是「沒有就動不了」。One branch
原始詞典資料4 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
requireverb/ɹɪˈkwaɪə/
- 1
To demand, to insist upon (having); to call for authoritatively.
- "I am Miss Newbury," I announced, "and I require to be shown to my room immediately, if you please."
- ‘Regrettably, I have concluded, after considering the matter over Christmas[…], that I can no longer maintain the high standard of service I require of myself, meet the demands of office and cope with the pressures of public life, without my health deteriorating further.’
- 2
Naturally to demand (something) as indispensable; to need, to call for as necessary.
- Chronic pain is occasionally a sign of a very serious problem, like brain tumors, and can require surgery.
- A weapon small enough to put on a missile would require uranium enriched to more than 90% U-235.
- 3
To demand (of someone) to do something.
- It is required (of me) that I give evidence in court.
- After Aug 3 all salesgirls will be required to wear only one style of skirt while on duty: the midi.
- 4
obsoleteTo ask (someone) for something; to request; to beseech.
- I requyre yow lete vs be sworne to gyders that neuer none of vs shalle after this day haue adoo with other, and there with alle syre Tristram and sire Lamorak sware that neuer none of hem shold fyghte ageynst other nor for wele, nor for woo.
- I requyre the in the name of god, that thou torment me nott.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。