Don't worry about the grammar, just learn this as a set phrase.

别管语法，只要把这个作为固定词组来学习即可。

牛津词典

Notice that this is a set phrase.

注意这是一个固定词组.

期刊摘选

In official documentary language, the use of set phrase has its functions, characteristics and principles.

公文语言中成语运用有其自身的功能 、 特点和原则.

期刊摘选

Chinese language lessons: Chinese set phrase , folk tales, ancient poems, oral Chinese, Chinese History and reading.

第一类课程为汉语语言课: 将开设汉语拼音、味成语、间故事 、 诗欣赏 、 字组词、常用语 、 国历史、字认字、读阅读.

期刊摘选

I know it's a set phrase.

我知道是一句俗语.

期刊摘选

This has become a set phrase.

这已成为一个固定词组.

期刊摘选

You may remember it a set phrase and the two phrases are the same in meaning.

可以作为短语记.这两个词组的意思相同.

期刊摘选

Did I say a set phrase just now?

王渊源:我刚说了一个成语 啊 ?

期刊摘选

A set phrase is always fixed.

成语呢是固定格式的.

期刊摘选

Later the set phrase a bamboo is used to refer to irresistible force or victorious advance.

成语“势如破竹”,形容战斗节节胜利,毫无阻挡.

期刊摘选

Can you guess a set phrase with them?

你能猜到一个成语 吗 ?

期刊摘选

Don't worry about the grammar, just learn this as a set phrase.

别管语法，只要把这个作为固定词组来学习即可。

《牛津高阶英汉双解词典》