She's a changed woman since she got that job.
她自從得到了那份工作，變得判若兩人。
She's been using since she was 13.
她從13歲起就吸毒。
His quality of life has improved dramatically since the operation.
手術(shù)后他的生活質(zhì)量大大改善了。
It's a long time since they left.
他們已經(jīng)離開(kāi)很久了。
It's been two weeks now since she called.
她到現(xiàn)在已經(jīng)有兩個(gè)星期沒(méi)來(lái)電話(huà)了。