音标:[in'vælid] ; 柯林斯词典等级:1 级;
n. 病人, 残废者
a. 有病的, 无效的
n. someone who is incapacitated by a chronic illness or injury
v. force to retire, remove from active duty, as of firemen
a. having no cogency or legal force
s. no longer valid
词型变化:名词复数形式 : invalids ; 现在分词 : invaliding ; 过去式 : invalided ; 第三人称单数 : invalids ; 过去分词 : invalided
考试类型:[六级/考研/托福/IELTS]
词性分布:
形容词55%
名词45%

invalid的用法和样例:

例句

用作形容词(adj.)
  1. A passport that is out of date is invalid.护照过期是无效的。
  2. Unless a check is signed, it is invalid.支票除非签了名,否则是无效的。
  3. She looks after her invalid mother.她照看病弱的母亲。
用作名词(n.)
  1. Nobody looks after the invalid.没人照顾这个病人。
  2. He never fully recovered, and had to spend the rest of his life as an invalid.他没能完全康复,于是不得不成了一名残疾者度过余生。
用作及物动词(vt.)
  1. He was invalided out of the army because of the wounds he received.他因负伤而退役。
  2. Ambassador decided that he must invalid his sick radio-officer home.大使决定把患病的无线电报员遣送回国。

常见句型

用作形容词(adj.)
用作定语~+ n.
  1. This is an invalid assumption.这是一个无根据的假设。
  2. He had to look after his invalid brother.他不得不照看他有病的弟弟。
用作表语S+be+~
  1. Their marriage is invalid.他们的婚姻是无效的。
用作名词(n.)
  1. He will visit an invalid.他将要去看望一个病人。
  2. Her grandfather is an invalid.她的祖父是一个残疾人。

词汇搭配

用作形容词 (adj.)
~+名词
  • invalid argument没有根据的论点
  • invalid person有病的人
名词+~
  • marriage invalid婚姻无效
用作名词 (n.)
动词+~
  • visit an invalid看望病人
形容词+~
  • bedridden invalid卧床不起的病人
  • permanent invalid长期病人

经典引文

  • He declared the wills technically invalid because of some legal flaw.

    出自:R. Graves
  • His invalid son, who had just suffered his first attack of epilepsy.

    出自:J. Barnes
  • Wounded in the lung and..invalided out of the army with TB.

    出自:M. Scammell
【近义词】
【反义词】

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