“be backed by” 用法详解

“Be backed by” 是一个常见的英语被动语态结构，表示某人或某事“得到……的支持、资助、证实或支撑”。该短语在新闻、学术写作和正式场合中尤为常见。

基本含义

“Be backed by” 通常意为：

• 被……支持（如资金、证据、权威等）
• 由……提供保障或担保
• 有……作为后盾

常见用法场景

• 政策/提案/计划：The new policy is backed by scientific research.（新政策有科学研究支持。）
• 人物/候选人：She is backed by several major corporations.（她得到了几家大公司的支持。）
• 声明/主张：His claim is backed by solid evidence.（他的说法有确凿证据支持。）
• 金融/信用：This currency is backed by gold reserves.（这种货币由黄金储备作保。）

语法结构

“Be backed by + 名词/名词短语” 构成被动语态，强调动作的承受者而非执行者。

主动语态示例：Investors back the startup. → 被动语态：The startup is backed by investors.

实用例句

• The project is backed by government funding.
• Her argument was backed by years of fieldwork.
• This certificate is backed by an internationally recognized institution.
• Any decision must be backed by data, not just intuition.