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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。
继续；坚持
先理解核心含义，再看它在真实句子里的用法。
继续；坚持
To continue doing something; to maintain a course of action without stopping.
Keep the door open.
让门开着。
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.
keep
Base
原形
keeps
3rd person
第三人称单数
keeping
-ing
现在分词
kept
Past
过去式
kept
Past participle
过去分词
He is keeping the change.
他正在保留零钱。
They kept the secret.
他们保守了秘密。
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。
She keeps running every morning to stay fit.
她每天早上坚持跑步以保持健康。
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。
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。
Not this
I keep to study English every day.
Use this
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。
Not this
Please keep this book to me.
Use this
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。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
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。
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。
Use keep naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
Keep 可拆为 K+EEP，K 像一把钥匙，EEP 像电子锁，牢记‘保持’锁住状态。
语域为中性，典型场景包括日常对话、书面指引、建议和指令等。由于“keep”表示保持状态或继续某动作时，在正式与非正式场合均普遍使用，未呈现明显的语域偏向，因此选择中性作为默认选项。
keep可作系动词（后接形容词或介词短语表示保持状态）或及物动词（表示保留、保管）。
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.