some 和certain的区别有哪些?
问题描述：
some 和certain的区别有哪些?
答
Some与certain的区别1.Some侧重说话人对所述之人或事不明确或一无所知,它只和单数名词连用,其前没有不定冠词.例如：Some person called on you when you were out.你出去时有个人来拜访你.There must be some reason...