Word · Frequency #305
since
自从；自……以来
核心释义
from the time that
- 1.
自从...时候起
From the time that.
- 2.
因为
Because.
因为；既然；自从...时候起；因为；既然；自...以后
用法In use
Since I moved here, I have made many friends.
用法提示：since 在此作时间连词，引导时间状语从句，表示“自从……以来”。
It has been three years since we last saw each other.
用法提示：since 在此作时间连词，用于“It has been + 时间段 + since”句型，表示“自从……以来”。
Since you are feeling unwell, you should stay home.
用法提示：since 在此作原因连词，引导原因状语从句，表示“既然”。
present perfect main clause + since + past simple clause
since 表示“自从……以来”，从句用一般过去时，主句常用现在完成时。
I have lived here since I moved to Beijing in 2020.
自从2020年搬到北京以来，我一直住在这里。
since + clause (reason)
since 表示“因为；既然”，语气比 because 更客观或委婉，常放在句首。
相关词与表达Connections
搭配Collocations
- ever since
- 自从……以来（一直）
- Ever since I started learning Chinese, I have been fascinated by it.自从我开始学中文以来，我就对它着迷了。
- since time began
- 自古以来，自开天辟地起
- People have told stories since time began.人类自古以来就讲故事。
- since you ask
- 既然你问起，既然你问了
- Since you ask, I actually prefer tea to coffee.既然你问了，我其实更喜欢茶而不是咖啡。
习语与比喻表达Idioms & figurative uses
- ever since
- 自从；从那时起We have been friends ever since we met in college.
学习提示Learner notes
记忆技巧Memory Tip
since 谐音“心思”，记住：从有“心思”的那一刻起，就有了“自从”和“因为”。
语境与语域Context & Register
语域：neutral 常见场景：日常对话、书面表达 since 作连词时可表示时间或原因，在口语和书面语中都比较常见，属于中性用法；具体含义需根据上下文判断。
语法说明Grammar Note
与完成时连用
发音与拼写Pronunciation & Spelling
与 since /sɪns/ 同韵（都读 /ɪns/）的词有：mince, prince, wince, rinse，注意它们的结尾辅音都是清音 /s/。形似但发音不同的词：sincere /sɪnˈsɪr/ 有两个音节，元音也不同；sins /sɪnz/ 结尾是浊辅音 /z/，与 since 的清辅音 /s/ 不同。
高价值词汇High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
用法优先级Usage priority
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.