Comma ",":indicates a pause less than a semicolon and greater than a pause.

";" Semicolon: A punctuation mark between a comma and a period in a hierarchy.

2, the usage is different

Comma: If there is a pause between the subject and predicate in a sentence, a pause between the verb and the object in a sentence, a pause after the adverbial in a sentence, and a pause between clauses in a compound sentence, use commas except sometimes semicolons; Used to separate words in a sentence or to indicate a pause in tone; When there are modal auxiliary words such as "ah", "ya" and "la" between coordinate words, commas are used between coordinate elements; When coordinate components are used as predicates, if coordinate components are subject-predicate structures, commas are used between coordinate components.

";" Semicolon: it is mainly used to separate two clauses that have certain relations (juxtaposition, turning, undertaking, cause and effect, etc.). )-A clause can belong to a single repetitive sentence, or it can be a first-level clause of multiple complex sentences, or it can be a parallel part of a big sentence. In addition, semicolons can also be used to separate parallel phrases that appear as enumerations, or different interpretations of the same meaning in dictionaries.

Foreign Language Usage of Comma ","

Comma is no longer a full-width format ","in Chinese, but a half-width format ",".

In English, comma and apostrophe ""are similar in shape to the closing quotation mark "",but they are underlined. In Chinese, its shape is ",",which is generally centered or bottomed, accounting for a large case; In Japanese, it has the same shape as the pause in Chinese.

In some European languages, ","can be regarded as a decimal point.

In English, it can also mean a large number of more than three digits, which is read separately every three digits; Now most of them are separated by spaces. Because they read large numbers in thousands, one thousand is one million, one thousand is one million, and one thousand is one trillion.

People in English-speaking countries can easily read ten digits with a micrometer. I don't know when the micrometer was introduced into China, but it can't solve China's reading problem. Because China people's reading habits are in units of ten thousand, ten thousand is one hundred million, and ten thousand is one trillion. If we want to introduce it, we should also introduce other people's ideas and principles, and "introduce digestion, absorption and innovation" in combination with China's reality.