分类：教育/科学-外语学习-英语考试
问题：......,withmoreandmoreofthesubst? 
......,wh more and more of the substancerequired to produce the desired effect.固定搭配是more and more of？ 记忆中好像没有OF
回答：with more and more of the substance required to produce the desired effect. （独立结构：with + noun + ed)

要产生预期的效果，需要的药剂量越来越大，

I became more and more of an ogre. 
我表现得越来越像个恶魔。