大学英语四级写作常见语法错误分类

大学英语四级写作常见的语法错误可以分为以下几类：

1. 主谓一致错误：指主语与谓语不一致，例如： "The students is studying." 应改为 "The students are studying."

2. 动词时态错误：指动词的时态与句子的语境不一致，例如： "She has been arrived yesterday." 应改为 "She arrived yesterday."

3. 语态错误：指把主动语态误写成了被动语态或反之，例如： "The book was write by him." 应改为 "He wrote the book."

4. 冠词错误：指冠词的使用错误，例如： "I need a advices." 应改为 "I need some advice."

5. 代词错误：指代词的使用错误，例如： "My brother is taller than me." 应改为 "My brother is taller than I am."

6. 并列结构错误：指在并列结构中不同成分的形式或结构不一致，例如： "He likes swimming and to play basketball." 应改为 "He likes swimming and playing basketball."

7. 介词错误：指介词的使用错误，例如： "She is good in basketball." 应改为 "She is good at basketball."

8. 句子结构错误：指句子的结构不完整或结构错误，例如： "Tired but happy after finished the exam." 应改为 "Tired but happy, they finished the exam."

以上是大学英语四级写作中常见的语法错误分类。在写作过程中，我们需要注意这些常见错误，并且通过反复练习来提高自己的写作能力。