otherwise，but for without 虚拟语气里怎么用 结构是什么

Question

如题所述

Answer 1

otherwise，but for without 虚拟语气条件不是通过if引导的条件句来表示，而是暗含在上下文中，但都可以还原成if引导的，用法与if条件虚拟一样
（1）用but for 、without(如果没有）等来代替条件从句，如
Without electricity human life would be quite different=If there were no electricity ,human life would be quite different
(2) 用otherwise、or(or else),even though等表示与上文的情况相反，从而引出虚拟语气。如：
I lost your address.Otherwise,I would have visited you long before. =I lost your address.If I hadn't lost your address ,I would have visited you long before.