第 6 课: 数字和时间表达法-1
One girl is riding a horse. 一个女孩儿在骑马
Two men are riding horses. 两个男人在骑马
One man is riding a motorcycle. 一个男人在骑摩托车
Two boys are jumping. 两个男孩儿在跳
One girl is jumping. 一个女孩儿在跳
Two girls are jumping. 两个女孩儿在跳
four children 四个孩子
four balls 四个球