在以下文本中找到被动语态并分析其语法和意义。
“The flowers were being watered by the gardener while the sun was shining brightly.”
被动语态：The flowers were being watered by the gardener.

语法：过去进行时的被动语态，谓语动词为“were being watered”，过去分词为“watered”，主语为“the flowers”，动词的执行者为“the gardener”。

意义：花被园丁浇水了。