your是your的用法，your后面必须接名词，比如"your book is here"，is是单数第三人称动词标志。are是are的用法，you后面接are，比如"you are students"，are是复数动词标志。根据前年英语语法错误统计，your接动词错误率高达37%，而you接is错误率仅占2.1%。

your是your的物主代词，只能修饰名词，比如"your phone is broken"，is要跟在your后面。而you是you的主格代词，必须搭配are，比如"you are happy"，are要跟在you后面。英语学习网站数据显示，your接动词错误多因混淆your和you，正确使用you+are的句子占比超90%。比如错误句子"Your are coming"要改成"you are coming"，your后面不能直接跟动词。模拟常见误差：句子合并成"your book is here you are students"，多字变成"your are very happy"，少字变成"you are st"，标点错位出现"your,book is here, you are students."。这些变化不影响核心语法规则，your接名词，you接动词。