1
eat up sth
sth为名词短语。
He ate up all the cookies.
他吃光了所有饼干。
吃光；吃干净
eats up — third person singular of eat up
先理解核心含义，再看它在真实句子里的用法。
吃光；吃干净
to eat all of something, leaving nothing
He ate up all the cookies.
他吃光了所有饼干。
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可生成：动词变形 Verb forms。只有点击后才会开始生成。
完全消耗
To consume completely.
减去,耗尽
To subtract, use up.
My brother was so hungry that he ate the whole pizza up in ten minutes.
我哥哥太饿了，十分钟就把整个披萨吃光了。
Please eat up your porridge while it is still hot.
请趁热把你的粥吃完。
The children are eating up the birthday cake as fast as they can.
孩子们正以最快的速度吃光生日蛋糕。
sth为名词短语。
He ate up all the cookies.
他吃光了所有饼干。
sth为代词时，必须放在eat和up之间。
Don't leave anything on your plate; eat it up.
盘子里别剩东西，都吃光。
Not this
I want to eat up pizza for lunch.
Use this
I want to eat pizza for lunch.
“eat up”表示“吃光”，强调完全吃完，而这里只是一般性地表达“吃披萨”，不需要加 up。在非完成意义时，直接用 eat 即可。
Not this
Let's eat up tonight at that restaurant.
Use this
Let's eat out tonight at that restaurant.
“eat up”意思是“吃光”或“耗尽”，而外出就餐应使用 “eat out”。这是混淆了 up 和 out 的固定搭配。
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常用于口语，表示吃完或耗尽
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.