This is( )backpack.( )is over there A him hers B her his C my her Dmine hers His是形容词型物主代词啊，你们好像搞错了！【难道是我搞错了？】

This is a backpack.（对.backpack提问） is this your backpack?翻译成中文 This is my backpack.改成复数形式 This is his backpack.改成否定句 is this your backpack?翻译成中文 This is my backpack改为同义句 Who backpack is this?改正错句 中文意思：this backpack is his. Is this his backpack?肯定回答 是“whose backpack is this 还是“whose backpack this is 为什么? This is ablue backpack.(改错为否定句)This a blue backpack.咋填 a backpack.A.That is B.This is This is a backpack in English（同上）划线部分：a backpack Is this your backpack?变复数要怎么变啊! —Cindy,is this your backpack?—Yes,t____ you. This is a black backpack改为同义句 this is a blue backpack改为一般疑问句 This is a blue backpack改为同义句