核心词议：
num. 四，四个
n. 四个人（或事）的一组；（板球）四分的一击；（衣服等）四号；四点的纸牌；四浆赛艇，四人划船队
adj. 四的；四个的
four 基本解释
num. 四；四个；第四
n. 四的；四个一组之物
n. 四的；四个一组之物
速记方法
速记技巧 词源记忆法 来自PIE*kwetwer, 四，词源同cadre, tetrameter,quarter.
知识扩展
重要短语
four seasons四季
four hundred名流；绅士
four modernizations四个现代化（农，工，国防，科技）；四化
gang of four四人帮
four 变化形式
复数： fours
易混淆的单词： Four
易混淆的单词： Four
中文词源： four 四 来自PIE*kwetwer, 四，词源同cadre, tetrameter,quarter. four
精选例句
1、 Essays (60%) Your four major essays will combine to form the main part of the grade for this course: Essay 1 = 10%; Essay 2-15%; Essay 3= 15%; Essay 4 = 20%.
论文(60%)你的四篇主要论文将构成本课程成绩的主要部分:论文1 = 10%;文章2 - 15%;论文3 = 15%;作文4 = 20%。[机器自动翻译，如有错误，感谢纠错]
2、 The flight will take four hours.
此次飞行将需要四个小时。
1、 Four traits stood out for those that achieved their goals, the researchers report in Public Understanding of Science.
研究人员在《公众对科学的理解》杂志上报告说，那些达到目标的人有四个特点。
1、 -based group that built and launched the very first nongovernmental satellite just four years after Sputnik.
该组织在人造卫星4年后建造并发射了第一颗非政府卫星。
1、 "Each year the physical presence rule becomes further removed from economic reality and results in significant revenue losses to the States." he wrote in an opinion joined by four other justices.
他在一份有其他四名法官参与的意见书中写道:“每年，实际到场规则都越来越远离经济现实，给美国带来重大收入损失。”
常见考点例句：
- Elections take place every four years .
- 选举四年举行一次。
- Four main factors have contributed to the silence .
- 促成人们沉默的有四个主要因素。
- Even in africa , four in ten people now have a mobile phone .
- 甚至在非洲，十分之四的人们现在在使用移动电话。
- Reports wuon some chinese news websites said three or four customers were injured .
- 一些中国新闻网站的报道说有三个或四个的顾客受伤。
- Kate can speak four languages .
- 凯特能说四种语言。
