1
be self-important
He is so self-important that nobody wants to work with him.
他如此妄自尊大，没人愿意和他共事。
自视过高的；妄自尊大的；自命不凡的
先理解核心含义，再看它在真实句子里的用法。
自视过高的；妄自尊大的；自命不凡的
having or showing an exaggerated sense of one's own importance
He is so self-important that nobody wants to work with him.
他如此妄自尊大，没人愿意和他共事。
自视过高的；自负的。
Having, or behaving as if having, too high an opinion of one's own importance.
因傲慢自大而表现出不应有的重要感
having or showing feelings of unwarranted importance out of overbearing pride
His self-important attitude made him unpopular among his colleagues.
他妄自尊大的态度使他在同事中不受欢迎。
The manager's self-important speech annoyed everyone in the meeting.
经理妄自尊大的讲话激怒了会议上的每个人。
She had a self-important way of walking, as if she owned the room.
她走路时一副妄自尊大的样子，仿佛整个房间都是她的。
He is so self-important that nobody wants to work with him.
他如此妄自尊大，没人愿意和他共事。
用作定语，修饰名词。
She gave a self-important speech about her achievements.
她发表了一番妄自尊大的演讲，讲述自己的成就。
Stop acting so self-important; you're not the only expert here.
别表现得这么妄自尊大，这里又不是只有你一个专家。
Not this
He is a self-important.
Use this
He is self-important.
“self-important”是形容词，不能直接用作名词。中文“妄自尊大的人”可能让人误以为它可以作名词，但英语中需用形容词作表语。
Not this
He is very selfish, always thinking he is better than others.
Use this
He is very self-important, always thinking he is better than others.
“selfish”指自私，只关心自己；而“self-important”指自视过高、妄自尊大。此处描述的是过分看重自己而非自私，故应用“self-important”。
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比较级为 more self-important，最高级为 most self-important；可作定语或表语。
Dictionary facts from ECDICT, WIKTIONARY.