be firm with sb
firm with 后接人，表示对某人态度坚决，后面常再加 about 说明具体事项。
You need to be firm with the children about their bedtime.
你在孩子的就寝时间上必须态度坚决。
坚实的；坚固的；硬实的
稳固的；牢固的；稳定的；坚定的；坚持的；不动摇的；坚强的；沉着的；坚韧的；可信赖的；可靠的；扎实的；坚定、稳固、坚实(位置)
Not soft or easily pressed; fairly hard and solid.
坚定、稳固、坚实(位置)
Steadfast, secure, solid (in position)
意见坚定
Fixed (in opinion).
坚持某事,不接受异议
Insistent upon something, not accepting dissent.
耐用、坚固(材料状态)
Durable, rigid (material state).
心理上不易受伤或受压
Mentally resistant to hurt or stress.
不轻浮或谬误；可信赖；可靠；扎实
Not frivolous or fallacious; trustworthy; solid; dependable.
The mattress is firm, providing good support for your back.
这张床垫很硬，能为你的背部提供良好的支撑。
用法提示：此处 firm 意为“坚硬的”，描述物体不容易变形或下陷。
She gave a firm refusal when asked to lie about the incident.
当被要求对事件撒谎时，她坚决拒绝了。
用法提示：此处 firm 意为“坚定的”，表示态度坚决、不动摇。
Make sure the ladder is firm on the ground before climbing up.
爬上去之前，确保梯子在地面上放置稳固。
用法提示：此处 firm 意为“稳固的”，强调固定牢靠、不摇晃。
firm with 后接人，表示对某人态度坚决，后面常再加 about 说明具体事项。
You need to be firm with the children about their bedtime.
你在孩子的就寝时间上必须态度坚决。
firm about 后接事情或决定，强调在某一具体问题上不肯让步。
She was firm about not lending him any more money.
她坚决不再借钱给他。
firm in 后多接 belief、conviction、resolve 等名词，表示信念或决心坚定。
He remained firm in his belief that she was innocent.
他依然坚信她是无辜的。
stay 或 remain 后接 firm 作表语，强调继续保持坚定的状态。
She stayed firm even when her friends kept pressing her.
即使朋友们不断施压，她依然毫不动摇。
grammar · medium
易错句子Our manager spoke firm to the whole team.
正确表达Our manager spoke firmly to the whole team.
修饰动词 spoke 必须用副词 firmly；firm 是形容词，只能作定语（a firm hand）或用在系动词后（be firm）。中文“坚定地说”没有词形变化，所以容易把形容词直接拿来当状语。
grammar · medium
易错句子Our new coach is very firm to the young players.
正确表达Our new coach is very firm with the young players.
表示“对某人严格、不让步”时，firm 的固定搭配是 be firm with somebody；介词 to 只表示方向或接受对象，不能引出“对……严厉”的意思。中文的“对……”容易误译成 to，这里应换成 with。
grammar · medium
易错句子She is firm for her decision to study abroad.
正确表达She is firm in her decision to study abroad.
firm 后接表示决心、信念、立场的名词时用介词 in（也可用 about/on），构成 be firm in one's decision/belief；for 表示目的或原因，与 firm 搭配不能表达“在某事上坚定不移”，所以应改为 in。
紧握；牢牢抓住
She kept a firm grip on the railing as she climbed down.
她往下爬时紧紧抓住了栏杆。
坚定的信念
He has a firm belief that hard work pays off.
他坚信努力会有回报。
坚定的立场
The company took a firm stance on employee safety.
公司在员工安全问题上采取了坚定立场。
坚实的基础
A good education provides a firm foundation for future success.
良好的教育为未来的成功打下坚实基础。
坚决的决定
They made a firm decision to move abroad.
他们下定决心移居国外。
常与firm搭配，形容握得紧而稳定，体现firm的“稳固”义。
firm stance表示坚定的立场，关联firm“坚定”的比喻用法。
a firm voice指坚定的话语声，体现firm“坚定有力”的语义。
a firm foundation表示稳固的基础，源自firm“坚实”义。
a firm handshake指有力的握手，常见搭配，体现firm“坚实、有力”的感觉。
坚持立场；不让步
The workers stood firm in their demand for better pay.
工人们在加薪的要求上坚持不让步。
坚持；保持不变
She held firm to her belief that honesty is the best policy.
她始终坚持诚实为上策的信念。
处于稳固的立足点；有把握
After reviewing the evidence, the lawyer felt she was on firm ground.
审查证据后，律师觉得自己有充分的把握。
为了支持这篇宣言，我们坚定地信赖天佑之神，彼此以生命、财产和神圣的荣誉互相宣誓。
This is the closing sentence of the U.S. Declaration of Independence, where 'firm' means resolute and unwavering.
这是美国《独立宣言》的结尾句，其中‘firm’意为坚定、不动摇。
你们要警醒，在信仰上站立坚定；要勇敢；要刚强。
From the Bible (1 Corinthians 16:13), this verse is often cited as a call to steadfastness; here 'firm' means determined and unshakable.
出自《圣经》（哥林多前书16:13），这节经文常被引用为坚守的呼吁，此处‘firm’意为坚定、不可动摇。
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