a teacher of my sister 和 a teacher of my sister's 有什么区别

He is a teacher of my sister和He is a teacher of my sister's my sister,___you met at my home,was a teacher of English 连词成句 1.set,my,of,lost,a,sister,keys(.) 2.teacher, my sister is a primary school teacher .oneday one of her stu Her sister,______ you met at my home,was a teacher of Englis She is a sister of my ____ (sister) 填什么 My sister is a teacher.(改为否定句) My sister _______ a teacher. A sister of ______ is a good teacher.A.me B.mine C.my 重点是为什么 A sister of ( ) is a very good teacher.A, a friend of my sister's是什么意思? you什么 a teacher.I什么 a student.MY sister什么 a student,too sister a teacher she teaching my is likes.合成一句话.