be feebleminded
常用系表结构，描述状态。
The patient was diagnosed as feebleminded.
该患者被诊断为智力低下。
低能的，智力发育迟缓的
低能的；精神薄弱的；意志薄弱的
lacking in intelligence or mental ability; retarded in intellectual development
低能的；精神薄弱的
s retarded in intellectual development
The feebleminded child could not learn even the simplest lessons at school.
那个低能的孩子在学校连最简单的课程都学不会。
用法提示：feebleminded 作定语修饰 child，指智力发育迟缓。
Many people wrongly assumed he was feebleminded just because he spoke slowly.
许多人错误地认为他低能，只因为他说话慢。
用法提示：feebleminded 作表语，表示被认为智力低下。
Despite his feebleminded appearance, he was actually quite intelligent.
尽管他看起来低能，实际上他很聪明。
用法提示：feebleminded 作定语修饰 appearance，指外表显得智力低下。
常用系表结构，描述状态。
The patient was diagnosed as feebleminded.
该患者被诊断为智力低下。
作定语修饰名词。
They established a school for feebleminded children.
他们为低能儿童建了一所学校。
系动词后作表语。
He appears feebleminded to his teachers.
他在老师面前显得智力迟钝。
grammar · medium
易错句子He is a feebleminded.
正确表达He is feebleminded.
feebleminded 是形容词，不能加冠词 'a' 用作名词，应直接作表语。
grammar · medium
易错句子He is feeble-minded.
正确表达He is feebleminded.
feebleminded 是固定拼写，不加连字符，应写为一个词。
feebleminded指智力低，weak-minded指缺乏意志力
feebleminded指智力发育迟缓，simple-minded指天真或不够复杂
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