a friend of Tom,还是 a friend of Tom's 或者两个都对?

a friend of Tom,还是 a friend of Tom's 或者两个都对? a friend of Tom表达对,还是a friend of Tom's对a friend of my father对，还是a friend of my father's对 英语翻译是Tom is a friend of Li Ming.还是Tom is a friend of Li Ming's? Tom is a best friend of mine. I am a friend of Tom(改错) a friend of her还是a friend of hers a friend of my还是a friend of mine He is a friend of Tom's father是否正确 a friend of Lily还是Lily's Friend of a Friend 歌词 He is a friend of ___.A.Tom's father B.Tom's father's C.Father's of Tom D.Tom father he said he was going to help----whth---english a.a friend of tom的;her b.a friend of tom;her of 后加宾语,形容词还是名词所有格Tom is an old friend of.A.his B.her C.my要理由 Tom is a good friend of ＿＿.A.me B.my C.mine D.I 英语翻译a friend of my father's还是a friend of my father,如何辨别, 他的一位朋友 是a friend of his 还是 a friend of him “A friend of my sister”表达正确吗?还是应该是“A friend of my sister's”? She is a friend of my正确还是She is a friend of mine正确?