含蓄虚拟语气but for，otherwise后接的是从句还是主句？

Question

如题所述

Answer 1

but for后面指条件，不是从句，是短语（要不是……）相当于without
But for your help, he would have failed.
otherwise后是并列句，否则，如果转变成为带虚拟条件句的句子，这个就属于主句。
He got your help otherwise he would have failed.

=If he hadn't got your help, he would have failed.