请教这句I will be back in five minutes请问这里的back是动词的话,那这句话不就有两个动词了吗?

“I will be back! 请教这句I will be back in five minutes请问这里的back是动词的话,那这句话不就有两个动词了吗? i will be back soon i will be coming back I will be back,from I think he will be back soon的同义句 I will be back,We will be back i will be back为什么要be i will be coming back与i will come back 这两个句子应该都对吧? I hope that I will be back soon.(改为简单句） I hope i will be back in a week.同意句是什么? I don't know____he will be back. I will be back?It is a i will be come back 和I will be back是 一个意思吧?I will be back 和 I will be come back一个意思么? I will be back 怎么读 i will be back in touch, i will be back什么意思 Thank you,I will be back