记忆方法
双解例句
小知识
Use the adjective rational to describe people or ideas that operate according to logic or reason. While your brother has an artistic temperament, you have a rational one.
Rational comes from the Latin word rationalis, meaning reasonable or logical. If you're rational, you do things based on logic, as opposed to impulse or whimsy. The original meaning in English was of something endowed with the ability to reason. Before we knew how smart some animals like dolphins are, writers liked to distinguish rational human minds from the supposedly irrational, instinctual minds of animals.
实用短语
常用短语
单词用法
rational:指有理性的,有思维推理能力,而不是凭感觉冲动从事。
reasonable:一般不十分着重推理的能力,而往往用来表示合乎情理、公正或务实。
sensible:一般指合乎常情、切合实际的行为与思想,侧重明白事理。
rational choice理性选择;理性抉择
rational analysis示构分析;示性分析
rational thinking理性思维
词根词缀
词根: rat
=calculate,表示”计算,考虑”
adj.
rational 理性的,合理的ration[n.理性,定量]+al……的→理性的,合理的
n.
rate 比率;等级;价格,费用rat计算,考虑+e→估价;评价→比率;等级
ratio 比,比率,比例rat计算,考虑+io→n.比,比率,比例
ration 理性,定量rat计算,考虑+ion→计算出来的量→定量,引申为理性
rational [数]有理数ration[n.理性,定量]+al……的→理性的,合理的
v.
rate 估价;评价rat计算,考虑+e→估价;评价→比率;等级
ratify 批准,认可,追认rat计算,考虑+ify表动词→通过计算证实
同义词辨析
这些形容词均有”明智的,合情合理的”之意。
- rational: 指有理性的,有思维推理能力,而不是凭感觉冲动从事。
- reasonable: 一般不十分着重推理的能力,而往往用来表示合乎情理、公正或务实。
- sensible: 一般指合乎常情、切合实际的行为与思想,侧重明白事理。
同义词
sensible / sound / reasonable / thinking / logical / level-headed
enlightened / level-headed / mental / coherent / logical / sound / sane / intelligent / thinking / dialectic / realistic / reasonable / sensible / advisable / intellectual / judicious
反义词
同根词
词根:ration
adj.rationalistic理性主义的;纯理论的
adv.rationally理性地;讲道理地
n.rationale基本原理;原理的阐述
ration定量;口粮;配给量
rationality合理性;合理的行动
rationalism理性主义;唯理主义
rationalisation合理性(等于rationalization)
rationalist理性主义者,唯理主义者
vi.rationalize实行合理化;作辩解;合理地思考
vt.ration配给;定量供应
rationalize使……合理化;使……有理化;为……找借口
rationalise合理地说明(等于rationalize)