读音

/sɪns/

释义

• 介词: 表示从某个时间点开始，常与现在完成时态搭配。例如: “I’ve been studying English since last year.”
• 连词: 引导原因状语从句，表示原因。例如: “I left early since I had a lot of work to do.”

短语

• “since then” 自那以后
• “ever since” 从那时起
• “since when” 从什么时候开始

例句

• 介词: “It’s been raining since this morning.”
• 连词: “I’m surprised to see you; since when do you like playing chess?”

同义词

• Because (连词，表示原因)
• From (介词，表示起点)
• Ever since (短语，表示从那时起)