Another way to say ' He is off'.
I say ' be off' every time. But is there another way to express?
she's out today? He has a off-day? or other ways...Thanks.

Question

Another way to say ' He is off'.
I say ' be  off' every time. But is there another way to express? 
she's out today? He has a off-day? or other ways...Thanks.

Answer

"She has a day off today." (good sentence. It means she has taken a day off work)
"She is having an off day." (means she's having a bad day)

If you know that the person has, for example, got a whole week off and they are going on holiday, you could say:
"She's on holiday." or "She's in France for the week."

Answer

various way [ she is out of the office / it is her day-off today / she is having a break from school or company / she is on a vacations / she took a day off ]

Answer

'He/She is away'  is almost a direct substitution for 'He/She is off'
They may be 'away/off' for holidays,sick leave,accrued work leave/leave with no pay, etc
'away off' is a casual term, but one you will hear all time.

Đừng bỏ lỡ cơ hội học ngoại ngữ ngay tại nhà. Hãy xem danh sách các gia sư ngôn ngữ giàu kinh nghiệm của chúng tôi và đăng ký buổi học đầu tiên ngay hôm nay!