keep + 宾语 + 形容词/介词短语
表示使某人或某物维持某种状态。
Keep the door open.
让门开着。
保持；使保持；遵守；信守；担任（板球的）守门员；继续(某种行动或方式)；不中断或放弃；坚持,维持。；信守承诺或诺言。
To continue doing something; to maintain a course of action without stopping.
常与动词的 -ing 形式连用，如 keep going、keep trying。
继续(某种行动或方式)；不中断或放弃；坚持,维持。
To continue in (a course or mode of action); to not intermit or fall from; to uphold or maintain.
信守承诺或诺言。
To remain faithful to a given promise or word.
保持某事物的状态。
To hold the status of something.
使处于或保持某种状态。
To hold or be held in a state.
担任(板球)守门员。
To act as wicket-keeper.
遵守；遵循；履行；不违背。
To observe; to adhere to; to fulfill; to not swerve from or violate.
现在进行时
He is keeping the change.
他正在保留零钱。
一般过去时
They kept the secret.
他们保守了秘密。
现在完成时
I have kept my promise.
我遵守了诺言。
Please keep your voice down in the library.
请在图书馆里保持低声。
用法提示：这里 keep 表示‘使保持在某种状态’，后接宾语和补语。
She keeps running every morning to stay fit.
她每天早上坚持跑步以保持健康。
用法提示：这里 keeps 后接动名词，表示‘继续做某事’。
I keep all my childhood toys in a box under the bed.
我把所有童年玩具都保存在床下的一个盒子里。
用法提示：这里 keep 表示‘保留、存放’，后接宾语和地点状语。
表示使某人或某物维持某种状态。
Keep the door open.
让门开着。
表示持续做某事，强调动作的延续。
Keep working until you finish.
继续工作直到完成。
表示保留、保存某物。
You can keep the change.
你可以保留零钱。
保留比 keep 更正式，常用于法律或正式场合
hold 更强调物理持有或控制，不如 keep 通用
preserve 强调防止变质或损坏，比 keep 更具体
maintain 常用于维护状态或水平，语气较正式
grammar · medium
易错句子I keep to study English every day.
正确表达I keep studying English every day.
在英语中，动词keep后接动名词（-ing形式）而非不定式，表示‘持续做某事’。中文干扰可能导致学习者误用‘keep to do’结构。
grammar · medium
易错句子Please keep this book to me.
正确表达Please keep this book for me.
表达‘为某人保管某物’时，应用介词for，表示目的或受益；to则指向方向，不符语义。此为介词混淆的常见错误。
maintain强调通过持续努力使状态或水平稳定，常用于正式语境或指维护关系/设施；keep更通用，可指保持位置或行为随意。
retain侧重不失去已有的事物，如权利、记忆或员工；keep更广义，可指保存物品或保持状态。
preserve强调使东西免受破坏或变质，常指食品、文物或环境；keep可指日常存放或维持。
遵守诺言
It is important to keep a promise once you make it.
一旦许下诺言，遵守它很重要。
保守秘密
Can you keep a secret? I have something to tell you.
你能保守秘密吗？我有件事要告诉你。
保持冷静
Keep calm and carry on.
保持冷静，继续前进。
保持联系
Let's keep in touch after graduation.
毕业后我们保持联系。
照看；留意
Could you keep an eye on my bag while I go to the restroom?
我去洗手间时你能帮我照看一下包吗？
跟上
She finds it hard to keep up with the latest fashion trends.
她发现很难跟上最新的时尚潮流。
keep + -er
keep + -ing
keep + sake
gate + keep + -er
house + keep + -er
goal + keep + -er
照看；留意
Can you keep an eye on my bag while I go to the restroom?
我去洗手间的时候，你能帮我照看一下包吗？
跟上；保持了解
It's hard to keep up with all the latest news.
跟上所有最新消息很难。
记住；牢记
Keep in mind that the deadline is next Friday.
记住截止日期是下周五。
保持冷静，继续前进。
Before the important interview, she reminded herself to keep calm and carry on.
在重要面试前，她提醒自己要保持冷静，继续前进。
亲近你的朋友，但更要亲近你的敌人。
The mafia boss advised his son to keep his friends close but his enemies closer.
黑帮老大建议他的儿子要亲近朋友但更要亲近敌人。
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.