She has improved since last year.
自从自从去年以来，她已经进步了。
We have been friends since childhood.
我们自从童年起就是朋友。
He moved here since the accident.
他自从事故后搬到这里。
She’s been happy since the wedding.
她自从婚礼以来一直很开心。
I've known him since high school.
我自从高中起就认识他。
They've lived here since 2010.
他们自从2010年起就住在这里。
It's been raining since morning.
天自从早上起就一直在下雨。
She’s been studying since noon.
她自从中午起就在学习。
He’s been ill since last week.
他自从上周起就生病了。
We’ve been waiting since 2 PM.
我们自从下午2点起就在等。
ever since
此后一直, 自…以来直至现在
since then
此后；自此；从那时以来
since the rinderpest
很久以前
be the best thing since sliced bread
最好的东西
be the greatest thing since sliced bread
最好的东西
