原句:If they had ever cared more about the child, he wouldn’t let them down now.(错综时间条件句的虚拟语气)
已知 more 做副词修饰单个动词时,一般位于动词之后,如:I love you more than anyone in the world.
但本句中的谓语动词为 “had cared”,这个时候应该一般把副词放在助动词“had”和实义动词“cared”之间吧?(或者句首句尾)
在 ... had ever cared more about the child ...中, more 的词序是正确的。例如:I promised Mum that I'd help more with the housework . 我答应妈妈我会多帮忙做家务。(摘自《朗文当代高级英语辞典》more / adv词条)这里的 I'd = I would,其中的would是助动词,would help 是过去将来时形式。