Is that the reason_____he was late?

2个回答

  • 该从句是定语从句.

    定语从句里,that和which都是关系代词,关系代词必须充当从句的一个名词性成分,比如把原句改一下,Is that the reason ________he told you?如果是这句,就用that和which了,因为that和which做从句里you后面的第二个宾语.而现在这句话,he was late完整,不缺少名词性成分,所以只能用关系副词why引导.记住了,定语从句里,why,when,where这三个是关系副词,引导的定语从句都必须是完整的,不缺名词性成分.