A those you pencil—cases?做否定回答!还有,It

A those you pencil—cases?做否定回答!还有,It Do you have a pencil box 做否定句回答 Those are pencil cases.(对pencil cases提问） 句型转换those are their pencil cases. Where are my pencil?做否定回答 Is that an egg?变复数 Is it a pen?做否定回答 Those are eraser.变单数 Th ls that a pencil作否定回答 Those are Rose's pencil-cases.(用whose提问） Here are two pencil cases----you what are those?（做否定回答） Are those her books?(做否定回答) are the pens (in your pencil box)? 做否定回答 that is a radio. (用