Is this your pen?

Sentence Pattern:  Is this your pen?

老師先收集班上同學的文具(pen, pencil, eraser, marker,...)

放在袋子中，再隨機抽出並套用句型問學生" Is this your pen?Is this your eraser?

學生回答為1.是 Yes, it is.      2. No, it isn't.