Is this/that your uncle?怎么回答?

Is this/that your uncle?怎么回答? Is this your uncle? Is that your uncle?和 Is he your uncle?的回答有何不同? Is this your uncle?(做出否定回答） IS THAT YOUR UNCLE ______ “Is this your uncle?" 回答是"yes,it is 还是yes,he is." Is this your friend?怎么回答 Is this your eraser怎么回答 Is this your desk.(怎么回答） Is this your son? 怎么回答? Is this your mum?怎么回答? Is that your sister?怎么回答