I think it a pure waste of time playing cards on the Internet.

问题描述:

I think it a pure waste of time playing cards on the Internet.
句子成分帮忙分析一下,特别是:playing cards on the Internet

我认为在网上打牌纯粹是浪费时间.
这是一个复合句.
I think 之后是一个宾语从句.
playing cards on the Internet 是从句的真正主语.it 是从句的形式主语.