he talked a lot as if he knew everything in the world.
问题描述：
he talked a lot as if he knew everything in the world.
as if 引导的方式壮语虚拟语气不是从句改变,主句与现在时态一致吗?怎么主句还用过去时?请指教
答
as if 用虚拟语气时,从句中有种情况,第一,当从句和从句表示的是同时,在从句中就用过去式,不受主句时态的影响.如：He talked as if he knew everything.第二,当从句先于主句时,在从句中就用过去完成时态.如：He talked as if he had been to many countries.