这个英语句子的句型What is known is that he is a taecther是定语从句吗,怎么判断的

这个英语句子的句型What is known is that he is a taecther是定语从句吗,怎么判断的 高中英语定语从句辨析What is well-known to us is that he died.是什么句子?主语从 He is the man (that) I told you about.这个句子中的定语从句的主谓宾是哪些啊? 高中定语从句I know that he is a man that means what he says这里THAT是 分析下这个英语句型Of his earlier years little is known ,save that he There is a car that is waiting outside中that引导的是定语从句么 用定语从句改写下列句子：1,It is well known that human activiti What is the reason that he gave for this?为什么是定语从句啊 "He bought a bike that ."像是这样的句子是宾语从句还是定语从句?则呢们判断的,为什么? He said that he is a boy .这个句子中的that引导是什么句型? it is worthwhile that这个句型后面的that从句部分需要使用虚拟语气吗? It is known to all that he is a good student.这里的that可以省略吗?