bad和bed读音有区别吗为什么我读着没分别啊

bad和bed读音有区别吗？为什么我读着没分别啊？

有区别：/b?d/，/bed/，这两个音不同：/?/，/e/

She seems cursed with bad luck.

她好像运气不好连连遭殃。

Half (of) the fruit was bad.

水果坏了一半。

He isn't such a bad chap really.

他这个家伙并不真的这么坏。

Divorce is bad for children.

离婚对孩子不好。

His spelling is very bad.

他的拼写能力很差。

Nobody realizes how bad things are.

没人意识到事情有多么糟糕。