I went to the teacher's house in a hurry - a question baffled me. I looked back - it was the teacher! Write the function of dashes in sentences

I went to the teacher's house in a hurry - a question baffled me. I looked back - it was the teacher! Write the function of dashes in sentences

The first is to explain why I went to the teacher's home. The second is progressive. I saw the teacher

He said, "I-I --"
What is the function of dashes in sentences

The function of dashes in sentences is to continue and strengthen the voice, and to highlight "I"
Supplementary notes:
A dash (--) is a symbol indicating the change of topic or mood, the continuation of voice, etc. "the sentences explained in the text are marked with a dash." "the sudden change of topic is marked with a dash." "the voice is extended, and the dash is used after the onomatopoeia." "the items are listed and divided, and the dash is used before each item." "it indicates the change of mood, the continuation of voice, the beginning and end of time and space, The Chinese dash is derived from EM dash in English, but it takes up two characters because it is easy to be confused with EM dash
The function of dash
one
2. Progressive
3. Extension
4. Show turning point
5
6. Computer application
7. Strengthen the focus
8. Examples of branches
9. Before subtitle
10. Identify the author
11. Supplementary notes