1·I saw a girl riding a horse.
我看见一个骑着马的女孩。
—— 《柯林斯英汉双解大词典》
2·Look! The boy is riding a horse.
看，这个男孩正骑着一匹马。
3·The boy is riding a horse.
这个男孩正在骑马。
4·She is riding a horse.
她正在骑马。
5·Riding a horse is fun.
骑马非常有意思。
6·When riding a horse you sit on the saddle.
骑马时要骑在鞍子上。
7·I like drawing, reading and riding a horse.
我喜欢画画、读书、骑马。
8·He hurt his leg while (he was) riding a horse.
他在骑马时伤了腿。
9·Cowboy riding a horse, appear to have very tired.
牛仔骑着马，看起来已经非常疲劳。
10·There is a girl in this photo. She's riding a horse.
照片里有一个女孩。她正在骑马。