宾语从句中的陈述语序宾语从句-时态 1主句用一般现在时,从句可用任意时态。2主句用过去时,从句用过去某个时态。3主句用过去时,从句是真理时,只用一般现在时。宾语从句-连接词 1连词that:只起连接作用,在从句中不作句子成分,也无词汇意义,在口语中或非正式文体中常被省略。He knew(that)he should work hard 2连词whether或if:它们起连接作用,在从句中不作句子成分,作“是否”解,口语中多用if。Do you know whether he will ride here at 8 tomorrow morning?3连接代词who,whom ,whose,what, which:它们起连接作用,作句子成分,各有其自己的意义。The teacher asked the new student which class he was in?(which引导宾语从句,在从句中作定语,修饰class,意为“哪个”。) 4连接副词when,where, why,how:起连接作用,分别作时间、地点、原