Correct sentences:
- Horses can run fast and for a long time.
- A long time ago, people used horses the way we use cars today.
Why this is better (easy words):
- We change "So long ago" to "A long time ago" because that is the usual way to say when something happened a long time in the past.
- When you start with "A long time ago," put a little pause (a comma) after it: A long time ago, — that helps the sentence sound right.
- "Used horses the way we use cars" explains that people rode horses to go places, like we drive cars now.
Try this: Say the two corrected sentences out loud. Can you point to a picture of a horse and say, "Horses can run fast and for a long time"?