将下列短文中的语法错误标记出来并提供正确的语法。
请改正下列文本中的语法错误并进行标记

“Me and John went to the store and seen a cat. It was as big as me and him.”
"Me and John"应该改为"I and John"，并且"seen"应该改为"saw"。
正确的文本如下：
"I and John went to the store and saw a cat. It was as big as him and me." 
语法错误标记为："Me and John"，"seen"。