ride a horse
ride on a horse

One night he learned to ride a horse and almost got killed.

He is also not very good at riding his horse.

Of course, he couldn't ride his horse into her room.

I can't think of nothing better than riding a fine horse into a new country.

You want to ride a horse with a name like that?

She was riding a horse for the first time in her life.

Riding a horse was difficult enough without having to talk at the same time.

The first day, he would ride his horse to the garden site.

She had better ride my horse back as it will save time.

In a way it really was like riding a horse.