The idiom of the truth of being human is that goodness is like water.

data expansion:

idioms (pinyin: chéng yǔ incarnation, English: idiom) are stereotyped words in Chinese vocabulary. Idioms, everyone says, become words, so idioms. Idioms are mostly four words, but also three words, five words or even more than seven words.

Idioms are a major feature of China's traditional culture. They have a fixed structural form and a fixed statement, indicating a certain meaning. They are used as a whole in sentences, and bear the components such as subject, object and attribute. A large part of idioms are inherited from ancient times, which represents a story or allusion. Some idioms are just a miniature sentence. Idiom is a kind of ready-made words, similar to idioms and proverbs, but slightly different.

structural fixity:

The components and structural forms of idioms are fixed, so it is generally impossible to change or add or subtract morphemes at will. For example, "cold lips and teeth" cannot be changed into "cold lips and teeth", "cold lips and teeth" and "cold lips and teeth". "There is no ink in the chest" can not be added as "there is no ink in the chest". In addition, the word order in idioms is fixed and cannot be changed at will. For example, "context" cannot be changed to "context"; "Great achievements" cannot be changed to "Great achievements".

meaning integrity:

idioms have integrity in meaning. "Its meaning is often not the simple sum of its constituent meanings, but the overall meaning further summarized on the basis of its constituent meanings". For example, "the fox pretends to be a tiger" means "the fox uses the power of the tiger" on the surface, but it actually means "relying on the power of others to bully people".

"When a rabbit dies, a dog cooks", the surface meaning is "When a rabbit dies, a hunting dog is cooked", but the actual meaning is "The people who serve the rulers are abandoned or killed when they are finished"; The superficial meaning of "forgetting to sleep and eat" is "forgetting to eat regardless of sleep", but the actual meaning is "extremely concentrating on hard work" and so on.

Grammatical diversity:

From the perspective of Chinese grammar, Chinese idioms are equivalent to a phrase in a sentence, because phrases can act as different components in a sentence, so the grammatical functions of idioms are also diverse.

There are various forms of Chinese idioms, such as four-character idioms, five-character idioms, six-character idioms, seven-character idioms and eight-character idioms, among which four-character idioms are the main form of Chinese idioms. Therefore, the analysis of the grammatical function of idioms here mainly focuses on the analysis of four-character idioms as syntactic components.