你昨天过的怎么样？可以这么说吗？Howwasyouryester?
这样说是不符合英语习惯的。从语法角度说，yesterday是副词，your是物主代词。your 后面一般接名词。所以不能用 your yesterday. 问你昨天过的怎么样可以直接说：How was yesterday? 或者 How was your day yesterday?