2019长沙小学英语必考重要知识点（二十三）
本身就是复数的词
眼镜glasses；耳机earphones；鞋shoes；裤子trousers等词本身是复数。
如：My glasses were on the chair just now.
但如果表示这双，这副，一双的时候用单数
如：There is a pair of chopsticks on the plate.
This pair of earphones is for you.