一直是的用法和樣例：
例句
-
我一直是每天工作12小時(shí)，不過(guò)我再也堅持不住了。
I've been working twelve hours a day, but I shall not be able to keep it up. -
那當然是約翰的媽媽。我差點(diǎn)把她給忘了。她一直是咱們的好朋友，對吧？
And that's John's mum, of course. I'd almost forgotten her. She's been a good friend to us, if you like. -
事情一直是這樣，并將繼續這樣下去。
It has been thus and will continue to be so. -
我妹妹一直是一個(gè)勤奮的學(xué)生。
My sister is always a studious student.
