英语达人来,Ask you friends what they thinks of the work they do.主

达人来啦~
you-your,thinks-think
这是祈使句,木有主语啊.
谓语;ask
直接宾语：your friends
间接宾语：what they think of the work they do （ask后面接的双宾语）
间接宾语里有一个省略了连接词that或which的定语从句 the work （that/which） they do

还有就是这里可以用how!关系副词一样可以引导作宾语的名词性从句.比如：
She always thinks of how she can work well. 她总是在想怎样能把工作做好.

希望能帮助到你~
如果你满意~请选择为“满意答案”~谢谢支持哈~