Eat now.
Meaning: This means to tell someone to start eating their food immediately. It's like saying, Please start putting food in your mouth and chewing it right now.
Choice of Words: Eat is a verb that means to put food in your mouth and chew it. Now means at this moment, without delay. When you put them together, "Eat now" is a simple instruction asking someone to start eating their food.
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Related Expressions