1. The bread I bought today is not ordinary bread, but sandwich bread.

Description: This dash is used to explain the specific type of "bread", indicating that this is not ordinary bread, but sandwich bread.

2. My favorite movie, The Shawshank Redemption, is a story about hope and freedom.

Description: This dash is used to explain your favorite movie and describe the theme of the movie.

He is a musician-no, it should be said that he is an excellent musician.

Description: This dash is used to correct or supplement the previous description and emphasize that he is an excellent musician.

He walked into that building-a building with a long history.

Description: This dash is used to explain the type of building and emphasize that it is a building with a long history.

Expand knowledge:

Dashes, alias parentheses, are in the form of "-". Dash is a symbol indicating "change of topic or tone, continuation of sound" and so on.

Development course:

In the history of western punctuation marks, long horizontal lines have many uses. As a dash, it was shaped and popularized in17 ~18th century. Tiret, the modern name of French dash, first appeared in 1554, which originated from the verb tiret (draw a line). English dashes appeared in the second half of17th century, originally called break, which means "breaking, breaking and dying", indicating a sudden pause or interruption;

18th century, renamed dash. This word was written in the Middle Ages as Qing Dynasty. People think it is borrowed from Danish daske, which means "slapping and rushing". 1552 began to be called "drawing short horizontal lines" and later developed into the name of modern dashes. Dashes appeared in German in the second half of17th century. Russian began to use dashes in the late18th century, called tabIe, and its name was borrowed from French.

Misuse:

(1) The specific process of music appreciation is generally from sensory appreciation, that is, the sound perception of music, to emotional appreciation, that is, the emotional experience, imagination and association of music, and finally to rational appreciation, that is, the understanding of interesting ideological connotation and artistic conception. Dashes and "that is" have the function of introducing explanatory statements and need not be used repeatedly. The word "that is" after the three dashes should be removed.

(2) With the increasingly serious air pollution, the ozone layer, known as the "first guardian of human life", has also been greatly destroyed. Change the dash to "of", or keep the dash and delete "known as".

(3) Jilin Carbon Factory is located in Jilin City, near Songhua River, with beautiful scenery. "Jilin City" does not mean Songhua River, and the dash should be changed to "Germany".

(4) In a few words, I would like to express my heartfelt thanks for "buying Zigewa, users don't have to worry". "Zigwa" is a refrigerator brand. The first comma in the sentence should be changed into a dash, otherwise the meaning will be incoherent.