seven + noun
直接修饰可数名词复数。
She bought seven apples.
她买了七个苹果。
比六多一个
比六多一个
being one more than six
There are seven days in a week.
一个星期有七天。
用法提示：seven 作形容词，修饰 days，表示数量为七。
She has seven apples in her basket.
她的篮子里有七个苹果。
用法提示：seven 作形容词，修饰 apples，表示七个。
He read seven books last month.
他上个月读了七本书。
用法提示：seven 作形容词，修饰 books，表示七本。
直接修饰可数名词复数。
She bought seven apples.
她买了七个苹果。
常表示年龄。
My daughter is seven.
我女儿七岁了。
表示整体中的一部分。
Seven of the students passed.
学生中有七个通过了。
grammar · medium
易错句子He is seven student in the class.
正确表达He is the seventh student in the class.
误将基数词 'seven' 用作序数词，应使用序数词 'seventh' 表示顺序。
grammar · medium
易错句子I have seven book.
正确表达I have seven books.
基数词 'seven' 后接可数名词复数形式，'book' 应变为复数 'books'。
seventeen 表示17，seven 表示7，两者在数字大小上相差10，常因发音或拼写混淆。
seventy 表示70，seven 表示7，位数不同（70 vs 7），常在数字表达中误用。
七天
There are seven days in a week.
一周有七天。
七点钟
The meeting starts at seven o'clock.
会议七点开始。
七大奇迹
The Great Pyramid is one of the seven wonders of the ancient world.
大金字塔是古代世界七大奇迹之一。
七宗罪
Pride is often called the first of the seven deadly sins.
骄傲常被称为七宗罪之首。
七大洋
In the past, sailors spoke of sailing the seven seas.
过去，水手们说起航行在七大洋上。
七年
They haven't seen each other for seven years.
他们已经七年没见面了。
The seventh day of the week is Saturday.
The population increased sevenfold in ten years.
She is seventeen years old.
The speed limit is seventy miles per hour.
Seventhly, we need to consider the budget.
His birthday is on the seventeenth of May.
乱七八糟；混乱不堪
Our travel plans are still at sixes and sevens, so we haven't booked anything.
我们的旅行计划还乱七八糟的，所以还没订任何东西。
七年之痒
He started acting distant, and she feared the seven-year itch had begun.
他开始变得疏远，她担心七年之痒已经开始了。
无数次；无限次地
You've asked me seventy times seven; my answer is still no.
你已经问了我无数次；我的答案仍然是不。
七国大军也阻挡不了我。
This line comes from 'Seven Nation Army' by The White Stripes, a widely recognized rock anthem. It is often used to express resistance against overwhelming odds.
这句话出自白色条纹乐队的《七国大军》，是一首广为人知的摇滚圣歌，常被用来表达对抗压倒性劣势的决心。
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Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.