be intended to do sth 用法详解
“be intended to do sth” 是英语中一个常见的被动结构,用于表示某事或某物被设计、计划或安排用来做某事。
一、基本含义
“be intended to do sth” 意为“旨在做某事”、“目的是做某事”、“被用来做某事”。它强调意图、目的或用途。
二、结构说明
- 主语 + be + intended + to do sth
- 其中 “be” 动词根据时态和主语变化(如 is / was / are / were 等)。
三、常见例句
- This app is intended to help students learn English grammar.
- The warning sign was intended to prevent accidents.
- These instructions are intended to guide new users through the setup process.
四、使用注意事项
- 不要与 “intend to do sth”(主动语态)混淆。前者是被动,强调“被设计/安排”,后者是主动,表示“打算做某事”。
- 常用于正式或书面语中,口语中也可使用,但略显正式。
- 可与 “for + 名词/动名词” 结构互换,但语义略有不同。例如:
“This tool is intended for editing documents.” vs.
“This tool is intended to edit documents.”
五、常见错误
❌ 错误:This book intends to teach beginners.
✅ 正确:This book is intended to teach beginners.
因为书本本身没有“意图”,所以应使用被动语态。