First of all, the difference

The pause time of comma is shorter than that of period, and it can't represent the end of the sentence. It is usually used in the middle of a complete sentence. A period indicates a positive tone and the end of a long pause. A period is usually used at the end of a simple sentence. Comma means that the sentence has a pause and no end. The most common use of comma is to indicate a general pause in a sentence. When the meaning or content of a sentence is not finished, use commas. Period is used at the end of simple sentences, ellipsis sentences, unowned sentences, etc.

Second, usage

1, comma: if there is a pause between the subject and the predicate in the sentence, use a comma; If there is a pause between the verb and the object in the sentence, use a comma; If you need to pause after the adverbial in the sentence, use a comma; Pauses between clauses in complex sentences should be commas, except sometimes semicolons; Used to separate words in a sentence or to indicate a pause in tone. Tip: ","cannot be placed at the beginning of a line or at the beginning of a line. When there are modal auxiliary words such as "ah", "ya" and "la" between coordinate words, commas are used between coordinate elements instead of pause.

2. period: used at the end of simple sentences; Used at the end of a sentence without a subject; Used to describe the actual situation of life and explain natural phenomena; Represents general prohibitions and requirements; Express aphorisms; Used at the end of ellipsis; Used after the signature at the end of the article and the date of the work; Used after some non-subject-predicate sentences (such sentences often appear in the stage description of the script); Used after the sentence placed at the beginning of the paragraph, equivalent to the title; Used at the end of complex sentences; A pause at the end of a statement is a period.

Examples of the use of commas and periods:

1, those who should come will come, and those who should leave cannot stay. Life has no ifs, only consequences and results. At any time, you should have the ability to face everything with a smile. Never forget the magic of a smile.

We fought all the way, not to change the world, but to stop the world from changing us. No matter how the world treats you, I will continue to work hard, be brave and full of hope!

The best way to live is not to wake up naturally in bed, nor to sit at home and do nothing. But with a group of like-minded people full of positive energy, running on the ideal road together.

4, an open life, not born with a steady stream of chicken blood, but acquired the ability to charge yourself from pain.

Some people say that life lies in stillness, others say that life lies in tossing. In fact, you are lazy and comfortable, and it is fun to toss. The important thing is that you have the wisdom to enjoy the process and the ability to bear the consequences.