Parentheses can be divided into in-sentence brackets and out-of-sentence brackets. Parentheses are used to annotate some words in a sentence, that is, they are part of the sentence and should follow the annotated words. Parentheses are used to annotate sentences, sentence groups or paragraphs, that is, they are structurally independent, do not belong to the previous sentences, sentence groups or paragraphs, and should be located after the last period of the annotated paragraph.

Punctuation marks are auxiliary symbols of written language, and are an organic part of written language. They are used to express the pause and mood of sentences and the specific nature and function of some components (mainly words). Special symbols in special fields such as mathematical symbols, currency symbols and sorting symbols are not punctuation marks. )

brackets

A label that indicates the content of a comment, supplementary explanation or other sentence with a specific meaning in a paragraph.

The main form is parentheses (), and other forms are square brackets [], hexagonal brackets [] and square brackets.

1, and indicate the following in brackets:

A) Mark the contents of comments or supplementary explanations.

Example ①: There are 17 special-grade teachers (including retired teachers) in our school.

Ex. 2: We are not only good at destroying an old world, but also good at building a new one! (Applause warmly)

B) Text marked with modification or addition.

Example 3: On the stationery, it is written in immature font: "Hello, Auntie!" " ? .

Example 4: All the construction projects undertaken by this construction company have reached the excellent engineering standards.

C) mark the sequential words.

Example 5: Language has three elements: (1) sound; (2) structure; (3) significance.

Example 6: Thought has three conditions: (1) is reasonable; (2) psychology; (3) ethics.

D) indicate the source of the reference.

Ex. 7: He said it well: "Don't set up a grid before painting; When you are finished, don't leave a grid. " ("Banqiao Collection, Title Calligraphy and Painting")

E) Mark the phonetic symbols of Chinese Pinyin.

Example 8: The word "de" is most commonly used in modern Chinese.

2. When indicating the nationality or dynasty of the author, square brackets or hexagonal brackets can be used.

Example 1: Huxley's theory of evolution and ethics

Example 2: Du Fu's Tang

3. Newspapers can mark the beginning of telecommunications and reports with square brackets.

For example: Xinhua News Agency Nanjing News

4. When marking the year of issue in the document number, you can use hexagonal brackets.

For example: Guo Fa [20 1 1]3 document.

5. Hexagonal brackets or square brackets can be used to mark the annotated words.

Example 1:[ Surprise] An incredible sight.

Example 2: Einstein physicist. Born in Germany, he immigrated to the United States from 65438 to 0933 because of persecution by Nazi regime.

6. Except for mathematical and logical formulas in sci-tech books and periodicals, all brackets (especially homographs) should be avoided as far as possible. When brackets must be used, different bracket forms should be used together.

For example: [velvet (róng) wool] very fine hair.

Extended data

1, period, comma, pause, semicolon and colon are all placed after the corresponding text, occupying the position of a word, ranking at the lower left and not appearing at the beginning of the line.

2. The question mark and exclamation mark are placed behind the corresponding word, occupying a word position, occupying the left side and not appearing at the beginning of the line. When two question marks (or exclamation marks) overlap, they occupy a word position; When three question marks (or exclamation marks) overlap, they occupy two words; When question marks and exclamation marks are used together, they occupy the position of a word.

3. The quotation marks, brackets and the title of the book are marked at the two ends of the corresponding entry, each occupying a word position. The first half does not appear at the end of the line, and the second half does not appear at the beginning of the line.

Baidu encyclopedia-punctuation marks