在英语中如何将两句用and合并为一句

一、两个主语不同的简单句,用“and”合并时,只想要去掉标点(不要忘了把 and 后那个单词改成小写的 -- 如果不是专业词的话：
(1) I am a student.
(2) You are a teachter.
(1) +(2) = I am a student and you are a teachter.
二、主语相同的两句话合并,去掉一个主语,
(1) I usually get up at 6.
(2) I go to bed at 22:00 everyday
(1) +(2) = I usually get up at 6 and go to bed at 22:00 everyday
如果谓语也相同的、再去掉谓语,
(1) I study English.
(2) I study history.
(1) +(2) = I study English and history.

前面的与后面的句意相同相似或有递进和并列关系