php策略模式的有关问题~下~多谢 帮改下下面的代码

php策略模式的问题~~~高手指点下~~谢谢 帮改下下面的代码
我把学武术 和使用武器做成了接口，行为做成了类 但怎么用都是很乱，，高手指点下。完了立刻给分

PHP code

<!--

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--><?php abstract class person{
    
    abstract public  function speak();
    public $a;
    public $wq;
    public function studywx($wx){
        $a=new $wx;
        return $a;
    }
    public function usewq($wq){
        $a=new $wq;
        return $wq;
    }
}
class chperson extends  person{
    public function speak(){
        echo "中国人在说话，各路让行!~";
    }
}
class amperson extends  person{
    public function speak(){
        echo "美国人在说，叽叽喳喳!~";
    }
}
class enperson extends  person{
    public function speak(){
        echo "英国人在叫，汪汪汪~";
    }
}
interface istudy{
    public function studywx();
    public function studyyy();
}
class studyw implements istudy{
    public function studywx(){
        echo "学习武术";
    }
}
class studtq implements istudy{
    public function studywx(){
        echo "学习泰拳";
    }
}
interface iwq{
    public function usewq();
}
class jian implements iwq{
    public function usewq(){
            echo "用剑"
        }

}
class qiang implements iwq{
    public function usewq(){
            echo "用洋枪"
        }

}
class xiaoqiang implements iwq{
    public function usewq(){
            echo "用小米加布枪"
        }

}
$chperson=new chperson();
$chperson->studywx(studtq);
$chperson->usewq(xiaoqiang);
$chperson->studywx(studtq);
$amperson=new amperson();
$amperson->studywx(studyw);
$amperson->usewq(xiaoqiang);
$amperson->studywx(qiang);


?>

------解决方案--------------------
稍微简化了你的例子，看注释应该清晰多了吧

PHP code

<?php abstract class person{
    abstract public function speak();
    public $a;
    public $wq;
    public function studywx($wx){
         $wx->studywx();
    }
    public function usewq($wq){
        $wq->usewq();
    }
}
class chperson extends  person{
    public function speak(){
        echo "中国人在说话，各路让行!~";
    }
}
class amperson extends  person{
    public function speak(){
        echo "美国人在说，叽叽喳喳!~";
    }
}

interface istudy{
    public function studywx();
}
class studyw implements istudy{
    public function studywx(){
        echo "如来神掌";
    }
}
class studtq implements istudy{
    public function studywx(){
        echo "葵花宝典";
    }
}

interface iwq{
    public function usewq();
}
class jian implements iwq{
    public function usewq(){
        echo "倚天剑";
    }
}
class qiang implements iwq{
    public function usewq(){
        echo "洋枪";
    }
}

$chiness=new chperson();//上来个中国人
$chiness->studywx(new studyw()); //给本如来神掌学
$chiness->usewq(new jian());//给他把倚天剑

$american=new amperson();//上来个美国人
$american->studywx(new studtq());//给本葵花宝典学
$american->usewq(new qiang());//给他个破洋枪 <div class="clear">
                 
              
              
        
            </div>