1
assert that + clause
He asserted that he had never seen the document.
他断言自己从未见过那份文件。
断言；坚称
asserts — third person singular of assert
先理解核心含义，再看它在真实句子里的用法。
断言；坚称
To state something clearly, firmly, and with confidence.
He asserted that he had never seen the document.
他断言自己从未见过那份文件。
有把握地或明确而强烈地声明；肯定地陈述
To declare with assurance or plainly and strongly; to state positively.
使用或行使并证明其存在
To use or exercise and thereby prove the existence of.
维护或捍卫(事业或主张)
To maintain or defend, as a cause or a claim, by words or measures; to vindicate a claim or title to.
坚持自己的权利或意见,不轻易被忽视
To insist on the legitimacy of one's rights, opinion, etc; not to allow oneself to be dismissed; to ensure that one is taken into consideration; to make oneself respected; to be assertive. See assert oneself.
assert
Base
原形
asserts
3rd person
第三人称单数
asserting
-ing
现在分词
asserted
Past
过去式
asserted
Past participle
过去分词
She always asserts her opinion strongly.
她总是坚定地表达自己的观点。
He is asserting his authority in the meeting.
他正在会议中主张自己的权威。
They have asserted their rights.
他们已经主张了自己的权利。
规则动词，注意第三人称单数加-s，过去式和过去分词加-ed。
She asserted her opinion during the meeting, even though others disagreed.
她在会议上坚持陈述自己的观点，尽管其他人不同意。
The scientist asserted that the data supported his theory.
这位科学家断言这些数据支持他的理论。
He always asserts his authority in the classroom.
他总是在课堂上维护自己的权威。
He asserted that he had never seen the document.
他断言自己从未见过那份文件。
指自信地表达自己的观点或权利。
She needs to learn to assert herself in meetings.
她需要学会在会议中坚持自己的主张。
The lawyer asserted his client's innocence.
律师坚称他的当事人无罪。
Not this
He asserted to be the owner of the car.
Use this
He asserted that he was the owner of the car.
“assert”是及物动词，后接that从句或名词作宾语，不能直接接不定式。改正为that从句，表达断言的内容。
Not this
She asserted about her rights.
Use this
She asserted her rights.
“assert”直接接宾语，无需介词。表示“主张、坚持（权利等）”时，直接跟名词。加了介词about导致结构错误。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
坚持己见；表现自信
She learned to assert herself in meetings.
她学会了在会上坚持己见。
声称；断言
He asserted that the report was accurate.
他断言报告是准确的。
维护权威
The manager asserted his authority over the team.
经理维护了自己对团队的权威。
显示优势
The alpha male asserts dominance over the pack.
雄性首领对群体显示优势。
加强控制
The government asserted control over the region.
政府加强了对该地区的控制。
坚称无罪
The defendant asserted his innocence throughout the trial.
被告在整个审判中坚称自己无罪。
坚持自己的主张；表现自信
She needs to assert herself more in meetings.
她在会议上需要更加坚持自己的主张。
维护自己的权利
Citizens should assert their rights to free speech.
公民应该维护自己言论自由的权利。
行使/维护自己的权威
The manager had to assert his authority to resolve the conflict.
经理不得不行使自己的权威来解决冲突。
Use asserts naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想“as（像）+ sert（插入）”，想象自己坚定地“插入”观点，以此记住 assert 是“断言、主张”的意思。
语域：formal 常见场景：formal writing、legal documents、technical specifications 通常用于正式书面语，如法律文件或技术说明中。
常接名词或that从句作宾语
Dictionary facts from ECDICT, WIKTIONARY.