I watched China's baseball game, but I don't know much about baseball rules. Who can tell me ~ ~ ~

This is the main situation in baseball: 1, strike out. The pitcher threw the batter straight out (three strikes) so that he couldn't get on base. If two shots are accumulated, the batter hits the ball out of bounds by touching it, which is also counted as out. 2. walk. The pitcher threw four balls and the batter went straight to first base. 3. fight. When the batter hits the ground (out of bounds), the defender must return it after picking it up, so that he can have time to run. This kind of ball is called hitting. 4. Get on base safely. The runner made it through and was not killed when he stepped on the base bag. 5. Home run. The batter hit the ball to the home run zone. How many people are on base at this time, plus the batter, how many points can you get (up to 4 points)? 6. Stealing the base. When the pitcher threw the ball, the base runner ran, and Kato pushed forward without hitting. 7. banned. The defender took the ball to the base and knocked base runner down. 8, kill. After the ball is hit, it will be caught by the defender before landing, and the batter is out. Until then, you can't run the base. You must wait until the ball is caught. 9. Contact killing. The defender touches the base runner's body with the ball (or next to the base runner), and the base runner will be out if he doesn't step on the base.