否定句：He didn't park his car in front of the house just now.
疑问句：Did he park his car in front of the house just now?
Heparkedhiscarinfrorltofthehouse justnow改为否定句,一般疑问句
否定句：He didn't park his car in front of the house just now.
疑问句：Did he park his car in front of the house just now?