be bad for和be bad to的区别：中文意思不同、用法不同、强调重点不同。be bad for中文含义为“对…有害”、“有害于某人的”、“有病的”，后接动名词形式；be bad to中午跟含义为“对…不好”，后面可接do sth。
一、be bad for的含义及用法
be bad for意为对……有害，后接动名词形式。例句有：
1、Dieting can be bad for you, not least because it is a cause of stress
节食可能不利于健康，相当重要的原因是它会引起精神压力。
2、It must be really bad, for her to ignore a summons from her mistress!
她居然不听女主人的使唤，实在是太不像话了！
3、Too much work and stress may be bad for inpiduals.
过多的工作和压力或许对个人而言并非好事。
4、But a policy can be bad for us without being good for China.
但是，这项对我们不利的政策对中国也没有好处。
5、But that would be bad for them and bad for your company.
但这对他们和对你的公司都不是好事。
6、It would be bad for society if people had doubles.
如果人们有替身，那会对社会有害的。
二、be bad to的含义及用法
be bad to意为对......不好，后接do sth。例句有：
1、It would be bad to start out at a B or C.
如果刚开始就得B或者C会很糟糕。
2、We didn't have to be bad to have fun.
并不一定非要学坏才开心。
3、It wouldn't be bad to see some birds if not swans here.
没有碰到天鹅，要是能看见鸟也行啊。
4、It would not be bad to eat with a little lime or with lemon or with salt.
如果加上一点儿酸橙或者柠檬或者盐，味道可不会坏。
5、Maybe it won't be so bad to turn out like you after all.
或许最后变得和你一样也没什么不好。
