每日一句口语 649（在线收听）

Do not know since when, I have become even oneself all feel strange.

不知从什么时候开始，我变得连自己都感到陌生。

【知识点讲解】

since 从...开始

例句：

His quality of life has improved dramatically since the operation.

手术后他的生活质量大大改善了。