英['rætɪfaɪ]美['rætɪfaɪ]
记忆方法
词根词缀法
-rat-计算，思考+-ify动词词尾
verb(动词)
双解例句
verb(动词)
小知识
To ratify a treaty or contract is to officially approve it by signing or voting for it. You and your brothers and sisters might devise a plan for a family vacation to Disney World, but it would need to be ratified by your parents.
You are most likely to hear the word ratify when talking about laws. In the U.S., Congress writes bills, but they need to be ratified before they become law. An amendment to the U.S. Constitution must be ratified by three-fourths of the states, either passed by the state legislatures or by state conventions.
实用短语
单词用法
词根词缀
词根 rat= to calculate 计算 ratify v. 证实 rat 计算 + ify 使… → 通过计算证实 → 证实 ration n. 定量 rat 计算 + ion 表名词 → 计算出来的量 → 定量 rational adj. 合理的 ration 定量 + al …的，具有…性质的 → 通过计算来定量 → 合理的 rationality n. 合理性 rational 合理的 + ity 具备某种性质，状况 → 合理性
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