1
remain + adj
Please remain calm.
请保持冷静。
保持；仍是
remains — third person singular of remain
先理解核心含义，再看它在真实句子里的用法。
保持；仍是
to continue to be in the same state or condition; to stay unchanged
Please remain calm.
请保持冷静。
留下；逗留；在他人或其他部分离开或消失后仍留下。
To stay after others or other parts have been removed or otherwise disappeared.
剩余；余下；不包括在内。
To be left after a number or quantity has been subtracted or cut off; to be left as not included or comprised.
保持；继续存在；维持不变；经久。
To continue unchanged in place, form, or condition, or undiminished in quantity; to abide; to stay; to endure; to last.
等待；交由；留给。
To await; to be left to.
remain
Base
原形
remains
3rd person
第三人称单数
remaining
-ing
现在分词
remained
Past
过去式
remained
Past participle
过去分词
She remains confident despite the difficulties.
尽管困难重重，她依然保持自信。
After the storm, only a few houses remained.
暴风雨过后，只剩几座房子。
The problem has remained unsolved for years.
这个问题多年来一直未解决。
remain 常作系动词，后接形容词或名词，表示‘保持’或‘仍然是’。
After the party, only a few guests remained to help clean up.
聚会结束后，只有少数客人留下帮忙打扫。
She remained calm even when the situation became chaotic.
即使情况变得混乱，她仍然保持冷静。
The cause of the accident remains unknown despite thorough investigation.
尽管进行了彻底调查，事故原因仍然未知。
Please remain calm.
请保持冷静。
The outcome remains a mystery.
结果仍然是个谜。
表示“逗留”时常用此结构。
She remained at the office until late.
她留在办公室直到很晚。
Not this
Please remain the ticket for me.
Use this
Please keep the ticket for me.
remain 是不及物动词，不能直接带宾语；表示“保留某物”应用 keep。
Not this
I remain to finish my homework.
Use this
I still have to finish my homework.
remain to do sth. 表示“有待去做”，常用于事物作主语；表达人“仍然需要做”应使用 still have to 或 still need to。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
保持冷静
Try to remain calm during the emergency.
在紧急情况下尽量保持冷静。
保持沉默
He chose to remain silent about the incident.
他选择对这件事保持沉默。
保持不变
The rules remain unchanged for this year.
今年规则保持不变。
留在原地
Please remain in place until further notice.
请留在原地，直到另行通知。
留下；逗留
Some students remained behind after class to ask questions.
一些学生课后留下问问题。
保持坐着
All passengers should remain seated until the plane has stopped.
所有乘客应保持坐着，直到飞机停稳。
有待观察
Whether the new policy will be effective remains to be seen.
新政策是否有效还有待观察。
蒙在鼓里
The public remained in the dark about the company's financial troubles.
公众对公司的财务问题一直蒙在鼓里。
保持秘密
The details of the negotiation remain a secret.
谈判的细节仍是个秘密。
Use remains naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：re（再）+ main（主要）→主要部分再次留下，即保持、停留。
通常用于中性或正式语境，表示保持状态或留在某处。
表示‘保持’或‘留下’时，不直接接宾语，常接表语（形容词/名词）或地点状语。
Dictionary facts from ECDICT, WIKTIONARY.