I will be back in a minute.back不是动词吗?为什么前面还要加be呢?

I will be back in a couple of I will be back in a matter of hours. i will be back in touch, I will be back?It is a “I will be back! I will be back in a minute.back不是动词吗?为什么前面还要加be呢? I hope i will be back in a week.同意句是什么? I will be back ( ) a moment.A of B in C on D for I hear he will be back in a month.能改成I hear he will come back in a month吗? back a will i minute be in句子排序,并说明一下 soon i will be back in your arms i will be back in touch,什么意思 I will be back in three days.为什么要有be 为什么不是I will back in three days. 选择.My sister ____ in a week.A.will back B.will be back C.is back D.was back i will be back soon i will be coming back I will be back,from I will be back,We will be back