He wants to know when Tom goes back.句子成分怎样划分?

Question

如题所述

Answer 1

He（主语）want to know（谓语）when Tom goes back（时间状语作宾语，即宾语从句）

Answer 2

He wants to know (when Tom goes back.)
括号的为宾语从句。本回答被提问者采纳

Answer 3

he 主语；wants to know 谓语；when Tom goes back 宾语从句。