If we have to walk in the street ,I should walk on the outside.请问这句话是不是使用虚拟语气,有无错前半句的语态使用是否正确?

If we have to walk in the street ,I should walk on the outside.请问这句话是不是使用虚拟语气,有无错前半句的语态使用是否正确?
If we have to walk in the street ,I should walk on the outside.请问这句话是不是使用虚拟语气,有无错
前半句的语态使用是否正确?

If we have to walk in the street ,I should walk on the outside.请问这句话是不是使用虚拟语气,有无错前半句的语态使用是否正确?
没有使用虚拟语气,但有一点极小的错误--标点符号.Street和逗号之间不应有空格.相反,逗号和I之间则要空格.
如用虚拟语气表达,可改写成：If we had to walk in the street,I would walk on the outside.

不是

不是，没什么错

如用虚拟语气表达，可改写成：If we had to walk in the street, I would walk outside it.