第二句是错误的,第一句是对的。象 yesterday, tomorrow 这类的词直接做时间状语就是,无须介词 ,因为它们本身就是副词,当然也可以作名词用,在句子中作主语,表语什么的(如下列1,2句)。 Yesterday was my birthday.昨天是我的生日。I can remember it as if it were yesterday.我对此事记忆犹新, 恍如昨日一样。Where was she yesterday ?昨天她在什么地方?The accident happened the day before yesterday.那意外事故发生在前天。...