这个问题，我以前解答过。为何没有了呢？

现在我又找到了原来的解答：

There's nothing half so much worth doing as simply messing about in boats.

【答】这个句子，有几个问题需要弄清楚：

1. half so much worth doing as simply messing about in boats 作定语，修饰nothing，等于：

There's nothing that is half so much worth doing as simply messing about in boats.

2. 在定语从句中，so...as...是比较结构。其中，so 是副词，意为“那样”、“那么”，实际就是as...as...结构的否定式。

3. half跟not连用，表示强调，意为“一点也不”。

4. 进一步简化句子为：Nothing is so much worth doing as simply messing about in boats.

【翻译】在船上除了瞎胡闹以外，没有任何事情可做。