怎么读(音标):/ɪnˈvælɪdeɪt/
用法:invalidate是一个动词,意为“使无效”,常用于正式文体。它可以指使某物失去有效性,也可以指使某人的论点或理论不再有效。在英语中,invalidate通常与一些名词搭配使用,如argument、claim、evidence等。
例句1:The court ruled that the evidence presented by the defense was insufficient to invalidate the prosecution's case. (裁定,辩护方提出的证据不足以使方的案件失效。)
例句2:The new regulations could potentially invalidate all existing contracts. (新规定可能会使所有现有合同失效。)
例句3:The scientist's findings have been invalidated by recent research. (最近的研究结果使这位科学家的失效。)
例句4:The company's failure to meet safety standards could invalidate their insurance policy. (公司未能达到安全标准可能会使他们的保险单失效。)
例句5:Her argument was quickly invalidated by her opponent's counterpoints. (她的论点很快被对手的反驳所否定。)
同义词及用法:invalidate的同义词包括nullify、void、annul等,它们都有“使无效”的意思。其中,nullify更多地指取消或废除某物的法律效力;void则更多地指使某物变得无效或无效化;annul则更多地指正式宣布某物无效。:
- The contract was nullified due to a breach of agreement. (由于违反协议,合同被取消。)
- The warranty is void if the product is used improperly. (如果产品被不当使用,保修将无效。)
- The marriage was annulled after it was discovered that one party had lied about their identity. (在一方曾经谎称自己的身份后,这段婚姻被宣告无效。)
编辑总结:invalidate是一个常用的正式动词,意为“使无效”。它可以指使某物失去有效性,也可以指使某人的论点或理论不再有效。与其同义词相比,invalidate更多地强调对某物的否定或废除作用。在写作时,我们可以根据具体语境选择合适的同义词来表达“使无效”的意思。