as far as 是英语中用途广泛的短语，既表示具体距离，也可抽象化为程度、范围或观点的限定。其核心功能是通过“远”的本义延伸出对空间、时间或认知边界的描述，在口语和书面语中均高频出现。
英式发音：/æz fɑː æz/
美式发音：/æz fɑːr æz/
核心含义：远至……；就……而言；到……程度
指物理空间上“远到某地点”或“与……一样远”，否定句中可用 so far as 替换。
We walked as far as the river and then stopped.（我们一直走到河边才停下。）
The desert stretches as far as the eye can see.（沙漠一望无际。）
They didn’t go so far as the mountains.（他们没走到山那边。）
就……所知/看来（引出个人认知范围）
As far as I know, the meeting will be held next Monday.（就我所知，会议下周一召开。）
As far as I can tell, she’s happy with the decision.（据我观察，她对这个决定满意。）
尽……所能（强调能力范围）
Parents should support their children as far as they can.（父母应尽力支持孩子。）
We’ll cooperate as far as possible.（我们会尽可能配合。）
就……而言（引出观点或立场，后接 is concerned）
As far as safety is concerned, this policy needs improvement.（就安全而言，这项政策需改进。）
As far as I’m concerned, education should prioritize creativity.（在我看来，教育应优先培养创造力。）
| 搭配 | 含义 | 例句 |
|---|---|---|
| as far as it goes | 就目前而言（未完全达标） | Your plan is good as far as it goes, but lacks details.（你的计划目前不错，但缺乏细节。） |
| as far as the eye can see | 一望无际 | There are green fields as far as the eye can see.（田野一片碧绿，一望无际。） |
| as far as...is concerned | 就……而论 | As far as the environment is concerned, this project is risky.（就环境而言，该项目有风险。） |
The trail leads as far as the abandoned cabin.（小径一直通到废弃的小屋。）
As far as I remember, we met in 2018.（我记得我们是2018年认识的。）
The company’s influence extends as far as Southeast Asia.（该公司的影响力扩展到东南亚。）
As far as I’m aware, no one has solved this problem yet.（据我所知，尚无人解决这个问题。）
We’ll help you as far as the rules permit.（我们会在规则允许范围内帮助你。）
The documentary covers history as far back as the 19th century.（这部纪录片涵盖了19世纪的历史。）
As far as the budget allows, we’ll upgrade the equipment.（在预算允许的情况下，我们会升级设备。）
Her parents opposed the idea as far as possible.（她父母极力反对这个想法。）
As far as the law is concerned, this action is legal.（就法律而言，该行为合法。）
The project has progressed as far as data colle