英语语法,that,在定语从句,宾语从句中何时可以省略?还有其他复合句可以省略的用法吗,希望英语高手讲明白点

定语从句。
Do you know the house that was built 200 years ago? 【从句主语，不能省略】
Do you know the house (that )they built ten years ago?
宾语从句
He told me (that) their team won the match.
He told me (that) their team won the match and that Tom was elected the best player.【第二个that不能省略】
表语从句
My suggestion is that we shuld go there at once.
主语从句
That they won the match is doubtful.

宾语

你把句子分解就是：
Do you know the house? They built the house ten years ago.
你几年级？？

宾语从句里一般均能省略。