在表示哪些人物名称要用is或are,比如you,your

在表示哪些人物名称要用is或are,比如you,your 用am,is或 are填空 1( ) you tourists? 2( ) he your friend?3He( )m Are your parents living?改成is your 或are you可以吗,为什么? your怎么不搭配are?比如：Where is your school? 你的包在哪里?用 Where is your bag?还是用 Where are you bag? Is your mother and you fine?为什么不用are?为什么要用is? when is your birthday?Where are you from?请问在问句的your之前,什么时候用i you,your 后面用is还是用are? 主语you可以用are为啥your 可以用is? 是不是you要用are,那your呢,是不是用is, when is your birthday?how are you? 用is或are填空：Here ( ) some orange for you.