1, nothing to write, nothing to say. Students have no material in their hearts, so they are speechless when they write it. Usually, there is no accumulation, no good observation, no sorting out of what I have experienced, or most of them have been forgotten.

2, can't catch the center, materials piled up. The center is unknown, I don't know what he wants to express, and I won't make up my mind.

3, the structure is incomplete, either without a beginning or without an end. It seems that the article is over before it is finished.

4. The article is irrelevant. The title of the article does not agree with the contents of the chapter, so the writing is off topic.

5, the sentence is not smooth, the meaning of the sentence is not clear. Words are repeated, sentences are repeated, and there is no match before and after.

6. There are many typos.

7. Punctuation is incomplete and wrong punctuation is added.

8. The division is unreasonable and disorganized.

9. The content is dry, not rich, not profound and unreadable.

The above nine points are common mistakes in primary school students' compositions. If you want to write a good composition, you should observe more and accumulate more. It is best to be diligent in writing and train your writing ability while accumulating materials.