within的用法是什么
时间: 2024-06-12 20:08:24 浏览: 15
within可以作为介词或副词使用,其主要用法如下:
1. 介词:表示在某个范围或时间内,在…之内,不超过
例句:
- We must finish the project within two weeks. 我们必须在两周内完成这个项目。
- The store is located within walking distance from my house. 这家商店离我家步行可达。
- The temperature outside is within the normal range. 外面的温度在正常范围内。
2. 副词:表示在某个范围内,在…以内
例句:
- She finished the race within the specified time. 她在规定的时间内完成了比赛。
- The concert hall can accommodate up to 500 people, but there were only about 300 people within. 音乐厅可以容纳500人,但里面只有大约300人。
- The book is within reach on the top shelf. 书在顶层架子上,拿得到。
3. 表示在某个地点周围
例句:
- There were soldiers within the perimeter guarding the base. 在基地周围有士兵把守。
- There is a park within walking distance of my apartment. 我的公寓附近有一个步行可达的公园。
4. 表示在某个期限内
例句:
- The payment must be made within 30 days of receiving the invoice. 收到发票后必须在30天内付款。
- The warranty is valid for two years from the date of purchase, and any repairs must be made within that period. 保修期为购买日期起两年,任何维修都必须在此期限内完成。