核心词议：
num. 七个，七
n. 七个人；七点钟；七岁
adj. 七的；七个的
seven 基本解释
num. 七；七个；第七
n. 七；七个
n. 七；七个
速记方法
速记技巧 词源记忆法 来自古英语 seofon,来自 Proto-Germanic*sebun,来自 PIE*septm,七，词源同 September,septet.
知识扩展
重要短语
seven years七年
at sixes and sevens乱七八糟
seven seas世界七大洋
group of seven七国集团；七大工业国
seven 变化形式
复数： sevens
中文词源： seven 七 来自古英语 seofon,来自 Proto-Germanic*sebun,来自 PIE*septm,七，词源同 September,septet. seven
精选例句
1、 Students from seven different primary schools in and around the small town were warming up and walking the route through thick evergreen forest.
来自小镇内外七所不同小学的学生们一边热身，一边穿过茂密的常绿森林。[机器自动翻译，如有错误，感谢纠错]
2、 We started German in year seven.
我们在七年级开始学习德语。
1、 The study included healthy, educated adults who took standard tests of memory, reasoning and perception at the outset and at some point over the next seven years.
这项研究包括了健康的、受过教育的成年人，他们在一开始和接下来七年的某个时候接受了记忆、推理和感知的标准测试。
1、 The summer after 7th grade, students spend three weeks on a college campus studying advanced math for seven hours a day.
七年级毕业后的暑假，学生们在大学校园里花三周时间，每天学习七小时的高等数学。
1、 There was first the rate of growth: (48) in many countries of Western Europe, the numbers of students in higher education doubled within five-year periods during the 1960s and doubled again in seven, eight, or 10 years by the middle of the 1970s.
首先是增长率:在西欧许多国家，接受高等教育的学生人数在20世纪60年代的5年内翻了一番，到20世纪70年代中期，在7年、8年或10年的时间里又翻了一番。
常见考点例句：
- She ordered the immediate closure of seven reactors .
- 她下令立即关闭七个核反应堆。
- Inside , papa would have seven perfect magic snowballs .
- 在那里，爸爸藏在七个精巧的雪球。
- Seven suspects were tortured to death .
- 七名嫌疑人被折磨致死。
- The uprising spread across seven provinces .
- 革命蔓延到七个省份。
- There would be seven main elements .
- 该方案将包括七个要点。
