不同于别的状语从句，比较状语从句的省略形式可能多些。

赵振才的《英语常见问题大词典》的as well as中，对I like Joe as well as Jack.给出了三种解释，分别是：

     我跟杰克一样喜欢乔。（省谓宾）

     我喜欢乔，同样喜欢杰克。（省主谓）

     我不仅喜欢杰克，也喜欢乔。（把as well as视作并列连词）

但是《牛津 英语用法指南PEU》在382的as well as中如是说：

    She sings as well as playing the piano.(既弹钢琴，又唱歌)

    She sings as well as she plays the piano.(二者一样好)

我自己想了几个句子，句子本身对不对，或是否有歧义，请专家释疑

    （1）She plays volleyball as well as basketball.(有歧义，并列连词或状语从句)

 这个句子要没歧义，是否只能仿照PEU,改成

        She plays volleyball as well as playing basketball.（都打）

        She plays volleyball as well as she plays basketball.（一样好）

        第二句是否过于麻烦呢？有没有更好的方式呢？

    （2）She plays volleyball as well as makes dishes.

       （有歧义，并列连词或比较状语从句）

       虽然少见，as well as似乎可以连接并列的谓语。

       She plays volleyball as well as making dishes.（都做）

       She plays volleyball as well as she makes dishes.（一样好）

      不知道理解地对不对，向老师确认下。