莎士比亚曾经写道：“So long as men can breathe or eyes can see，/So long lives this，and this gives life to thee.”诗句中的this指的这个夏日。

题目：莎士比亚曾经写道：“So long as men can breathe or eyes can see，/So long lives this，and this gives life to thee.”诗句中的this指的这个夏日。