diff --git a/game_functions.py b/game_functions.py
index 5d66b80..9890bef 100644
--- a/game_functions.py
+++ b/game_functions.py
@@ -8,4 +8,16 @@ from alien import Alien
 
 
 def check_keydown_events(event, ai_settings, screen, ship, bullets):
-    """响应按键"""
\ No newline at end of file
+    """响应按键"""
+    if event.key == pygame.K_RIGHT:
+        ship.moving_right = True
+    elif event.key == pygame.K_LEFT:
+        ship.moving_left = True
+    elif event.key == pygame.K_UP:
+        ship.moving_up = True
+    elif event.key == pygame.K_DOWN:
+        ship.moving_down = True
+    elif event.key == pygame.K_SPACE:
+        fire_bullet(ai_settings, screen, ship, bullets)
+    elif event.key == pygame.K_q:
+        sys.exit()
\ No newline at end of file