Common modal particles are: Ma, De, Le, Mo, Zhe, Ba, Ah, Ah, La, Alas, Ai, Ba, Le, Wow, Ya, Ma, Oh, Oh, Ha, Hey, Xu, Frighten, Ya, Yao, Woo, Ka, Dong, Hu.

Punctuation: exclamation point, pause, period, ellipsis.

Common mistakes in using punctuation marks:

1, multiple titles or quotation marks are separated by a pause.

2. It is not standardized to use the connection number when expressing numerical values and start and end years.

3. Use commas in coordinate clauses.

4. Use a period before using a semicolon in the coordinate clause.

5. The brackets in the same form are applicable.