第一道題目:
Sarah: Have you seen Matt recently?
Joe: Matt? He's in Canada.
Sarah: Really? How long has he been in Canada?
Joe: About a year now. I saw him a few days before he went.
最後一句,he went是後來的時間,為什麼前面的時間是用I saw呢?而不是I had seen?
另一道題目:
Jim and I work for the same company. He joined the company before me.
When I started a few years ago, he was already working there.
想請問為何用He was already working there而不是He'd already been working there?
感謝!