since
US /sɪns/
UK /sɪns/

介词
连词
1.
自从
from the time when
示例:
•
It's been a long time since we last met.
自从我们上次见面以来,已经很久了。
•
Many things have changed since I left.
自从我离开后,很多事情都变了。
2.
既然, 因为
because; as
示例:
•
Since you're busy, I'll leave now.
既然你很忙,我现在就走了。
•
Since it's raining, we should stay inside.
既然下雨了,我们应该待在室内。
副词
1.
从那以后
from that time until now
示例:
•
He moved away, and I haven't seen him since.
他搬走了,从那以后我就没见过他。
•
She got a new job and has been much happier since.
她找到了一份新工作,从那以后她快乐多了。
在 Lingoland 学习这个单词