一帆杰作
不可以替换，crazy 是对于某种事物的迷恋，这件事正在进行中或已经实现He is crazy about music.表现他的一种对于音乐迷恋疯狂的状态He is eager for success on music.他现在没有成功，表示一种希望并为之努力的结果
冬日红葉
沉迷于英文短语：Addicted to。
例句：
1、We are addicted to buying new things.
我们沉迷于买新东西。
2、He's addicted to computer games.
他迷上了电脑游戏。
3、I went through about four years of being addicted to video games .
我大约有4年时间沉迷在电子游戏中。
4、After about three months, I was no longer addicted to nicotine.
大约3个月后，我就不再对尼古丁上瘾了。
5、She had become addicted to golf.
她已经迷上高尔夫球了。
yanran8385
我们先对比下两个短语的用法，再来判断是否可在英语表达中互相替换。一、be crazy about 热衷于，醉心于； 迷恋上，爱上用法：be crazy about sth. 着迷某物；着迷；对某物着迷be crazy about doing sth. 疯狂地（痴迷地）做某事例如：He is always crazy about games at/on weekends. 他在周末经常着迷于游戏。(at为英式，on为美式)I am crazy about playing basketball. 我热衷于篮球这项运动。二、be eager for 渴望，想得到用法：be eager for sth. 渴求某事物；迫不及待做某事；渴求某物质 be eager to do sth.=be eager for sth.=be eager that从句例如：He is eager for progress very much. 他非常渴望进步。注意：从英语习惯表达和相关语法书解释来看，很少见 be eager for doing sth.，而只有be eager to do sth. 所以总结如下：在表达"对某事物渴望，或者热衷于某某"时 ， be crazy about sth.=be eager for sth.但表达"痴迷于做某事，热衷于做某事"时， be crazy about doing sth.=be eager to do sth.
