Bath

 an act of washing your whole body by sitting or lying in water  沐浴，洗澡 [名词]

1. He takes a cold bath every morning.

他每天早晨都洗冷水澡。

2. After a bath, he took a walk in the yard.

沐浴后，他在院子里散步。

3. I think I’ll have a bath and go to bed.

我想洗个澡，然后睡觉。

 to have a bath or to give a bath to somebody 洗澡；给...洗澡 [动词] [主要用于英国英语中]

1. It’s your turn to bath the baby.

轮到你给婴儿洗澡了。

2. I bath every night.

我每晚都洗澡。

Bathe

 to wash something with water, especially a part of your body  用水清洗，冲洗 [及物动词]

1. I want to bathe my face and hands.

我要洗洗脸和手。

2. You must bathe that wound before you bind it up.

包扎伤口之前必须先清洗。

 to have a bath or to give a bath to somebody 洗澡；给...洗澡 [动词] [主要用于美国英语中]

1. I bathe every day.

我每天都洗澡。

2. Have you bathed the baby yet?

你给婴儿洗澡了吗？

【注意】

bath作名词时，在英国英语和美国英语中都可以用来表示”洗澡，沐浴”，只是搭配有所不同。

I think I’ll have a bath and go to bed. （英）

I think I’ll take a bath and go to bed. （美）

在英国英语中，常用bath作动词表示”洗澡”，而在美国英语中，常用bathe作动词表示”洗澡”。

I always bath before I go to bed. （英）

I always bathe before I go to bed. （美）