1
something + be + a piece of cake (for someone)
常用于肯定句，表示某事很容易。
The exam was a piece of cake for her.
这次考试对她来说是小菜一碟。
小菜一碟；轻而易举
pieces of cake — plural of piece of cake
先理解核心含义，再看它在真实句子里的用法。
小菜一碟；轻而易举
A job, task, or other activity that is pleasant or easy to do.
The exam was a piece of cake for her.
这次考试对她来说是小菜一碟。
用于形容事情非常简单
一件愉快之事；引申为轻而易举之事
A job, task or other activity that is pleasant or, by extension, easy or simple.
非比喻或习语用法:参见 piece、cake
Used other than figuratively or idiomatically: see piece, cake.
The math test was a piece of cake for her.
数学考试对她来说是小菜一碟。
After practicing for months, the performance was a piece of cake.
经过几个月的练习，表演变得轻而易举。
Don't worry, fixing this is a piece of cake.
别担心，修好这个很容易。
常用于肯定句，表示某事很容易。
The exam was a piece of cake for her.
这次考试对她来说是小菜一碟。
it作形式主语，不定式是真正主语。
It's a piece of cake to learn this new software.
学会这个新软件是小菜一碟。
独立使用，表示轻松完成。
Piece of cake! I finished it in five minutes.
小菜一碟！我五分钟就搞定了。
Not this
It is piece of cake.
Use this
It is a piece of cake.
英语习语'piece of cake'中，'piece'是可数名词，前面需要不定冠词'a'。学习者常受中文影响省略冠词，导致语法错误。
Not this
This exam is a cake.
Use this
This exam is a piece of cake.
汉语表达'小菜一碟'没有冠词问题，但英语习语必须使用完整形式'a piece of cake'，不能省略'piece'，否则变成字面意思'一块蛋糕'，不符合习语用法。
Choose the next layer that will help you use pieces of cake with more confidence.
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通常用于单数形式，表示某事非常容易。
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.