在学习英语的过程中，我们都会遇到人称代词，而人称代词又分为主格和宾格。那么什么是主格和宾格呢？它们在句子中有什么不同的作用呢？
主格
主格是人称代词在句子中作为主语时所使用的形式。常见的主格有I，you，he，she，it，we，they等。例如：
- I am a student.
- You are my friend.
- He is a doctor.
- She likes to read books.
- It is a dog.
- We are going to the park.
- They are playing basketball.
宾格
宾格是人称代词在句子中作为宾语时所使用的形式。常见的宾格有me，you，him，her，it，us，them等。例如：
- She gave me a present.
- They invited you to their party.
- He loves her very much.
- I saw him at the cinema.
- We took it with us.
- They helped us with our homework.
- She called them yesterday.
需要注意的是，在一些特殊情况下，人称代词的主格和宾格形式是相同的，例如：
- Who is there? It's me.
- He told her and me the news.
总之，了解人称代词的主格和宾格形式是非常重要的，因为它们在句子中扮演着不同的角色，对于我们正确理解句子的意思和运用语法是至关重要的。希望这篇文章能够对大家学习英语有所帮助！
