1
must perforce do sth
We must perforce accept their offer.
我们只得接受他们的提议。
必然；只得
先理解核心含义，再看它在真实句子里的用法。
必然；只得
by necessity; because of circumstances
We must perforce accept their offer.
我们只得接受他们的提议。
较正式，多用于书面语
出于环境所迫；必然地；理所当然地。
By constraint of circumstances; of necessity; as a matter of course.
Our flight was delayed, so we perforce spent the night at the airport.
我们的航班延误了，所以我们只得在机场过夜。
As the newest member, he perforce handled the simplest tasks.
作为最新加入的成员，他只得处理最简单的任务。
The repair kit was missing, so she perforce used tape instead.
修理工具不见了，所以她只得用胶带代替。
We must perforce accept their offer.
我们只得接受他们的提议。
perforce 较正式，多用于书面语。
The plan perforce changed.
计划必然发生了变化。
The explanation was perforce brief.
解释必然很简短。
Not this
He perforced to accept the offer.
Use this
He perforce accepted the offer.
perforce 是副词，意为“必然地、不得已地”，不能当作动词使用。原句把 perforce 误当动词并接不定式；应改为副词直接修饰动词 accepted，表示“他不得已地接受了提议”。
Not this
They left by perforce.
Use this
They left perforce.
perforce 本身已含 by necessity（必然地、被迫地）之义，前面再加介词 by 是多余的。应删去 by，让 perforce 直接作状语修饰 left。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
只得；不得不
We must perforce wait for the next train.
我们只得等下一班火车。
只得接受
She perforce accepted the lower price.
她只得接受了较低的价格。
不得不承认
He perforce admitted his mistake.
他不得不承认自己的错误。
只得留下；只能继续
They perforce remained in the village.
他们只得留在村里。
只能依靠
Travelers perforce rely on local guides.
旅行者只能依靠当地向导。
必然有限；必然受限
Our options are perforce limited.
我们的选择必然有限。
Use perforce naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆联想：per(穿过)+force(力量)——被力量逼着穿过，只得照做，即“必然”。
语域：formal 常见场景：正式书面语、文学叙述 perforce 比较常见于正式或文学语境，意为“必然地、只得”，口语中很少使用。
以上单词都以 /ɔːs/ 结尾，彼此押韵，可用来对照 perforce 的拼写与读音。注意拼写相似的 perforate（/ˈpɜːfəreɪt/，穿孔）和 perform（/pəˈfɔːm/，表演）发音不同，不要混淆。
Dictionary facts from ECDICT, WIKTIONARY.