什么是 “Provided That”?
“Provided that” 是一个引导条件状语从句的连词短语,相当于中文的“只要……就……”或“倘若……”。它用于表达某事成立的前提条件。
You can borrow my car provided that you return it by 8 p.m.
只要你晚上8点前还车,你就可以借我的车。
只要你晚上8点前还车,你就可以借我的车。
常见同义表达
以下短语在多数情况下可与 “provided that” 互换使用:
- Providing that(更口语化)
- As long as(最常用)
- On condition that(较正式)
- If(通用,但语气不如 provided that 正式)
We’ll go hiking as long as it doesn’t rain.
= We’ll go hiking provided that it doesn’t rain.
= We’ll go hiking provided that it doesn’t rain.
语法结构
基本句型为:
主句 + provided that + 条件从句
注意:
- “that” 可以省略,尤其在非正式语境中。
- 从句使用一般现在时表将来(遵循“主将从现”规则)。
She will attend the meeting provided (that) she feels better tomorrow.
实用例句
- I’ll support your plan provided that it’s cost-effective.
- You may stay out late provided that you call us first.
- The contract is valid provided that both parties sign it.
使用场景
“Provided that” 常见于以下情境:
- 法律文件或合同条款(强调前提条件)
- 学术写作(表达严谨的假设)
- 日常对话中表达带有明确限制的许可或同意