staff是單數還是復數

　　staff例句分享

　　The staff are all members of a trade union.

　　全體職工都是工會員。

　　I find the hotel staff particularly courteous.

　　我發現飯店員工特別謙恭有禮。

　　We were told he has many fans among the staff.

　　我們得知在工作人員當中也有許多他的影迷。