be old-hat
用作表语，表示某事物已不再新颖。
That technology is old-hat now.
那项技术现在已经过时了。
过时的；陈腐的；老套的
老旧的
Out of fashion or no longer interesting; overused and banal.
老旧的；陈腐的
s repeated too often; overfamiliar through overuse；s out of fashion
His old-hat jokes didn't get any laughs at the party.
他那些老掉牙的笑话在派对上没引来任何笑声。
用法提示：old-hat 作形容词，修饰 jokes，表示‘陈腐的’。
Wearing bell-bottoms to a job interview is considered old-hat nowadays.
如今穿着喇叭裤去面试被认为很过时。
用法提示：old-hat 作形容词，描述行为或风格‘过时’。
Many young people find the traditional teaching methods old-hat and ineffective.
许多年轻人觉得传统的教学方法老套且无效。
用法提示：old-hat 作形容词，用于描述方法‘陈旧’。
用作表语，表示某事物已不再新颖。
That technology is old-hat now.
那项技术现在已经过时了。
表示变得过时，强调变化过程。
His jokes have become old-hat after being repeated so often.
他的笑话重复太多次，已经变得陈腐了。
用作定语，直接修饰名词。
She wore an old-hat style of dress.
她穿着一种老式连衣裙。
grammar · medium
易错句子This design is an old-hat.
正确表达This design is old-hat.
old-hat 是形容词，表示‘过时的’，不能用作可数名词，所以前面不能加冠词 a/an。
grammar · medium
易错句子These designs are old-hats.
正确表达These designs are old-hat.
old-hat 作为形容词没有复数形式，不能加 -s。
old-hat 强调因陈旧、重复而令人厌烦；outdated 侧重指不再符合当前时代或潮流
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