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Cuando hablamos de comida en el ingles Británico decimos:

Have breakfast.

Have lunch.

Have dinner.

Example: 

What do you usually have for breakfast?

I usually have hot chocolate and bread for breakfast. 

Y en el ingles americano se dice así:

Eat breakfast.

Eat lunch.

Eat dinner.

Example: 

What do you usually eat for breakfast?

I usually eat hot chocolate and bread for breakfast.