be a show-off
可数名词，复数形式为 show-offs；此处作表语，指某类人。
He's such a show-off when guests come over.
客人来的时候他特别爱炫耀。
爱炫耀的人；卖弄的人
爱炫耀的人；喜欢自我表现、炫耀技能或能力的人。；卖弄；炫耀
a person who shows off, trying to impress others with their abilities
爱炫耀的人；喜欢自我表现、炫耀技能或能力的人。
One who shows off; a person given to egotistically demonstrating their prowess or ability.
Tom is such a show-off; he always drives his sports car with the top down in slow traffic.
汤姆真是个爱炫耀的人，他总是在缓慢的车流中开着敞篷跑车。
用法提示：这里 show-off 用作名词，指爱炫耀的人，前面有冠词 a。
The competition was full of show-offs trying to impress the judges with flashy tricks.
比赛现场到处都是爱炫耀的人，他们试图用花哨的技巧打动评委。
用法提示：这里 show-offs 是复数形式，指多个爱炫耀的人。
I didn't invite him to the party because he's a show-off who dominates every conversation.
我没有邀请他参加聚会，因为他是个爱炫耀的人，总在每个谈话中抢风头。
用法提示：这里 show-off 用作名词，说明一个人的性格特征。
可数名词，复数形式为 show-offs；此处作表语，指某类人。
He's such a show-off when guests come over.
客人来的时候他特别爱炫耀。
a bit of a show-off 语气较委婉，表示炫耀程度不重。
She's a bit of a show-off at the piano.
她弹钢琴时有点爱卖弄。
show-off 在此作宾语补足语，说明对某人的评价。
His teammates called him a show-off after the goal.
进球后队友们说他是爱炫耀的人。
复数 show-offs 常后接 who 从句，用来描述一类人。
The playground was full of show-offs who wanted attention.
操场上全是想引人注目的爱炫耀的人。
grammar · medium
易错句子Tom is show-off.
正确表达Tom is a show-off.
show-off 是可数名词，指“爱炫耀的人”，单数形式前必须加冠词 a；汉语没有冠词，学习者容易漏掉。
grammar · medium
易错句子He likes to show-off in front of his classmates.
正确表达He likes to show off in front of his classmates.
动词短语 show off 写作两个词，中间不加连字符；show-off 只是名词形式。学习者记住名词后常把连字符误带到动词上。
grammar · medium
易错句子She is very show-off about her grades.
正确表达She is such a show-off about her grades.
show-off 是名词，不能像形容词那样被 very 修饰；表达“很爱炫耀”要用 be a/such a show-off 这类名词结构。
show off 是动词短语，用来描述炫耀的行为；show-off 是名词，指爱炫耀的人。
braggart 指用言语夸耀自己成就或能力的人；show-off 指用行为展示技能、外貌等以吸引注意的人。
attention-seeker 指用各种手段（包括哭闹、装可怜等）吸引注意的人；show-off 特指通过展示自己的技能或优点来炫耀的人。
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