He further claims that “the pleasure of fishing can be divided into three states: the first consists of merefish-eating;the second combines fish-eating with the pleasure of fishing;while the third consists in the pleasure of fishing alone when, facing a pond of clear water, you put aside all your vexations andannoyances and enjoy the complete mental and physical relaxation."

1.第三个小分句里面加粗的when为什么要用逗号隔开?

2.第三个小分句的句子成分怎么划分?