大学英语语法问题涵盖多个方面，以下是一些常见的语法知识点：

名词类错误

单复数形式错误

错误：What are the women teachers doing？

正确：What are the women teachers doing？

分析：当man或woman修饰可数名词复数时，要用复数形式men或women。

集合名词的单复数

错误：How many peoples are there in the room？

正确：How many people are there in the room？

分析：people作为集合名词，其单复数形式相同。

动词类错误

时态不一致

错误：I was walking along the road, and there aren't many cars on the street.

正确：I was walking along the road, and there weren't many cars on the street.

分析：保持时态一致，这里应使用过去进行时weren't。

语态误用

错误：Printing was introduced into Europe from China.

正确：Printing was introduced from China to Europe.

分析：强调动作的承受者，应使用被动语态。

句子成分错误

主谓不一致

错误：My sister goes to the cinema at least once a week.

正确：My sister goes to the cinema at least once a week.

分析：主语是第三人称单数，所以谓语动词应使用第三人称单数形式goes。

句子成分残缺

错误：We should read books maybe useful.

正确：We should read books which are maybe useful.

分析：定语从句中which不能省略，否则会造成句子成分残缺。

其他语法知识点

虚拟语气

错误：If I were you, I would take the job.

正确：If I were you, I would take the job.

分析：虚拟条件句中，be动词根据主语的人称使用were或was。

倒装句

错误：Out came the sun.

正确：The sun came out.

分析：当表示地点的介词短语放在句首时，句子要使用完全倒装。

强调句

错误：It was at the party that I met her.

正确：It was at the party that I met her.

分析：强调句式中，It is/was... that/who...结构用于强调句子中的特定成分。

总结

大学英语语法问题多样，涉及名词、动词、句子成分等多个方面。掌握这些知识点并注意避免常见错误，对于提高英语写作和阅读能力至关重要。