this is my 是回答图型,还是回答身体部位?

this is my 是回答图型,还是回答身体部位? whose is this book?请问它的回答到底是：this book is mine.还是：this is my book. 英语翻译这是谁?我妈妈.翻译成英语是who is this 回答 she is my mother还是 回答 this is my mother 是This eraser is mine还是This eraser is my? Is this your school?Yes,it is my school.Is this your ticket?Yes,this is my ticket.为什么一个用it is,一个是this is回答? 如何回答 Whose is this 是说It's ...还是 This is...有何区别同理。Is this...是回答It's 还是 This is...有何区别？ is this Jim?的回答 is this Jim?的回答是Yes,it is.还是Yes,he is. This is my fviend否定回答 Is this my bedroom 的否定回答 这是我的父母是还是This is my parents?还是These are my parents? 打电话时回答：“是我”应该是：this is alice's speaking,还是this is alice speaking 是This is my blue pen 还是This is my a blue pen有助于回答者给出准确的答案 是This is the photo of my school.对还是This is my school's photo对 Is this boy your brother?(做肯定回答)是Yes,it is.还是Yes,he is. Is this girl your sister?肯定回答是Yes,it is.还是Yes,she is. What is it还是What is this回答是：It is a baseball. “Is this your uncle? 回答是yes,it is 还是yes,he is. 额、哪个对 Is this your sister?的回答是yes,it is还是yes she is