2、音標：英：re?z?r，美：re?s?r。
3、造句
（1）Rub out chalk marks with an eraser。
用黑板擦擦掉粉筆字跡。
（2）He rubbed out the last sentence on his paper with his eraser。
他用橡皮把試卷上的最後壹句話擦掉了。
（3）Yes，I have your eraser，too。
是的，我還拿了妳的橡皮。
（4）He puts his pen ruler and eraser into his backpack。
他把他的鋼筆、尺子和橡皮擦裝進書包裏。
（5）I want to buy an eraser in that stationery shop。
我想去那家文具店買塊橡皮。