Simplify the following text for a Grade 4 native English-speaking person.
Original: To achieve a hit , the batter must reach first base before any fielder can either tag him with the ball , throw to another player protecting the base before the batter reaches it , or tag first base while carrying the ball .
Simplified: If he gets to a base before he is called out he is safe and the next batter comes forward and tries to hit a ball from the pitcher . The old batter who is on base becomes a runner .