your sister 是第三人称马?

your sister 是第三人称马? 哪些主语是第三人称单数?My sister Your brother之类的也是么? they,your friend,my sister,my sister and brother,we,your是不是第三人称? sister是第三人称单数吗?是第几人称? sister 第三人称单数形式 your sister是第几人称 your brother是第三人称单数吗? your parents是第三人称单数么 是Can you sister sing?还是 Can your sister sing? Your sister your sister Is this your sister?的答语是? is this your sister的答语是 is this your sister 的肯定回答是?is this your sister 的肯定回答是? your的第三人称 your怎样改成第三人称 your family 是第三人称单数吗?用do还是does your是第三人称吗要正确的答案.