主语从句：That he is right is known to all of us.宾语从句：We all know (that) he is right.为什么主语从句中是known 而不是被动词knew

IT seems that he is very tired.是主语从句还是表语从句 主语从句it is...that 中的that why引导的主语从句why he didn't come is that he was ill. 对吗? 主语从句中 that表什么 如 It is certain that he will win the match. 主语从句 真正的主语是哪个 It is certain that he will wi主语从句 真正的主语是哪个 It is certain that he will win the match IT seems that he is very tired.是不是即可做主语从句又可做表语从句 主语从句：That he is right is known to all of us.宾语从句：We all know (that) he is right.为什么主语从句中是known 而不是被动词knew he is the man who wants to see you.是定语从句.that he is the man wants to see you.是主语从句.如果不对, that 在做从句时是不是主语 he prefer music that has great lythat 在做从句时是不是主语he prefer music that has great lyrics to misic is very loudly用that还是which 下列属于哪类从句 比如 主语从句 宾语从句 时间状语 定语等 I think （that）he is fit for his office. 到底主句跟主语是怎么区别的呀?最近学了名词性从句里的主语从句,但有一点搞不清楚.复合句不是主句+从句吗?那主语从句又是主语又是从句,那主句是什么.比如:That he will come is certain.That he w 怎么知道关系代词在定语从句做什么成分?比如 He is the man that was praised at the meeting THAT在从句作主语 he says that he is leading a meaningful life makes him happy?这个句子对吗?其中that he is leading a meaningful life 是宾语从句中的主语从句,says 后面省掉了that,这样理解行否? 英语语法,主语从句what he likes is playing chess after supper.是主语从句吗?为什么? who will come?He is welcome.用主语从句合并. 主语从句 it is ,that能省略吗 it is the first time that是主语从句吗 如何判断宾语从句、主语从句、状语从句等?还有分析长句子.例如：Is he the man who/that wants to see you?为主语从句 这是因为 wants to see you前面没有主语引导吗?He is the man whom/that we all respect.在这里