7 + plural noun
I bought 7 books.
我买了7本书。
七
比六多一个
seven
比六多一个
being one more than six
There are 7 days in a week.
一周有7天。
用法提示：7 在此作形容词，修饰 days，表示数量为七。
She put 7 books on the shelf.
她把7本书放在书架上。
用法提示：7 作形容词修饰 books，说明书的数量。
The bus arrives in 7 minutes.
公交车7分钟后到达。
用法提示：7 作形容词修饰 minutes，表示时间段为七分钟。
I bought 7 books.
我买了7本书。
定冠词后接数字7和复数名词，表示特指的一组七个事物。
The 7 wonders of the world attract many tourists.
世界七大奇观吸引了许多游客。
表示整体中的一部分，数字7后接of短语。
7 of the students passed the exam.
学生中有7个通过了考试。
表示年龄，7用作形容词补语。
My daughter is 7.
我女儿7岁。
grammar · medium
易错句子I read 7 chapter yesterday.
正确表达I read chapter 7 yesterday.
中文语序常将数字置于名词前（如'七章'），但英语中表示编号时，数字常置于名词后。因此，应将'7 chapter'改为'chapter 7'。
grammar · medium
易错句子I have 7 book.
正确表达I have 7 books.
中文名词无复数变化，但英语中可数名词前有数字时需加-s表示复数。应改为'books'。
数字7与单词seven均表示数字七，但用法不同：在正式或规范书面语中，小于10的数字通常拼写为单词（如seven），而数字7多用于非正式、技术或数据表格语境。
adjective
numeral
adjective
numeral
adjective
adjective
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