英语虚拟式的反转,if i were可以反转成were i, 那if i had been,可以同样反转吗

英语虚拟式的反转,if i were可以反转成were i,那if i had been,可以同样反转吗
回答可以：
if sb were +sth =were sb +sth
if sb should do sth =Should Sb do sth
if sb were to do sth =were sb to do sth
If sb had done sth =Had sb done sth
如果把IF 去掉,后面就要倒装,表示如果意思