虚拟语气中as though与as if 有何异同?

as if 更强调ifas though更强调though一个条件 一个转折也没有很大区别啦.它们的区别在于：1.在as if从句中表达与现在事实相反从句用过去时.He felt as if he alone were responsible for what had happened .他感到...