She has worked here since she left school.
They have stayed in this city since they got married.
I haven’t seen her since I left the small town.
It is ten years since you left.
（此句型主句常用一般现在时： It is +时间段 +since从句）
Ted has been working since he arrived.
She had been happy since she met him.
Since we came back, he had been very busy.
They had lived in a hotel since their house burnt down.
I was a year since I had seen her.