This is the pencil whose point is broken.语法结构?　This is the pencil whose point is broken.这就是那个折了尖的铅笔.语法结构是什么?

this is your pencil This is ( )eraser. ( )eraser is in the pencil case . pencil,this,is,the,in,pencil case连词成句用这个连词成句pencil,this,is,the,in,pencil case必须是问句 Is this your pencil?是什么意思? Is this pencil your?改错 This is his pencil case. what is the pencil the pencil case is( ). This book is talking about the w( ) This is a pencil box.对a pencil box 提问 This is a pencil box.(对” a pencil box”提问 ) this is his pen.my is in the pencil box 哪里错了 怎么改 this is his pen.my is in the pencil box 哪里错了 怎么改 what is the ( ) for pencil a pencil is under the This is your pencil.(改为一般疑问句) this is a pencil 改为一般疑问句 This is my pencil改成一般疑问句