If you don't move that bag,there may be an accident.（同义句转换）改为___move that bag,___there may be an accident.

If you don't move that bag,there may be an accident.（同义句转换）改为___move that bag,___there may be an accident.
If you don't move that bag,there may be an accident.（同义句转换）
改为___move that bag,___there may be an accident.

If you don't move that bag,there may be an accident.（同义句转换）改为___move that bag,___there may be an accident.
Don't move that bag,or there may be an accident
不要移动那个包,否则就会出事故

There may be an accident if that bag is not moved.

If you leave that bag out,there may be an accident.

Move that bag, or there may be an accident.