英语：人称代词——主格

1、主格作主语

例：He is a teacher.

2、“I（我）”在英语中以大写形式出现

例：I study in a middle school.

3、“she”常常代替国家、城市、宠物等，表示一种亲密的感情

例：I live in China.She is a great country.

4、“it”可指不知性别的婴儿或不确定性别的人

例：-Who is the person over there?          -It is the headmaster（校长）.

例：敲门的时候。-Who is it?          -It's me.

5、“it”也可以用来表示时间、天气、距离等

例：时间          It's about eight o'clock.

例：天气          How cold it is today.

例：距离          It's 200 meters from here.

6、“it”代指上文已提及的事物（同名同物）

例：I can't find my hat.I don't know where I put it.我找不到我的帽子了。我忘记放哪里了。