英语中什么是主语第二人称？

一般现在时和现在进行时第二人称后的Be动词怎么用要牢记；

第二人称单数用 are ，

（For example）例如：

一般现在时-------

You are a teacher;

You are a doctor;

You are a dog;

You are a boy;

You are a girl;

You are beautiful;

You are handsome;

现在进行时-------

You are working;

You are going;

You are eating;

You are reading book;

You are talking;

第二人称复数也用 are ，

（For example）例如：

一般现在时-------

You are friends;

You are boys;

You are girls;

You are tall;

You guys are heavy;

现在进行时-------

You guys are working;

You guys are going;

You guys are eating;

You guys are reading book;

You guys are talking;

一般过去时和过去进行时第二人称后的Be动词怎么用要牢记；

第二人称单数用 were，

（For example）例如：

一般过去时-------

You were a teacher ten years ago;

You were a doctor five years ago;

You were a poet 20 years ago;

When You were young;

You were a little girl 6 years ago;

You were a president 4 years ago;

When You were a smart boy;

过去进行时-------

You were working yesterday;

You were running last night;

You were eating apples last Wednesday morning;

You were reading book this morning;

You were talking the day before yesterday;

第二人称复数也用 were ，

例如（For example）：

一般过去时-------

You were friends ten years ago;

You were engineers two years ago;

You were short 3 years ago;

You were poor ten years ago;

You guys were heavy 5 years ago;

过去进行时-------

You guys were working yesterday;

You guys were going last night;

You guys were eating apples last Wednesday morning;

You guys were reading book this morning;

You guys were talking the day before yesterday;