It is said that是什么结构

It is said that是什么结构 it is said that的固定结构可以改成 it was said that? It is said that. It is said that that was all that he said.这三个that分别是什么从句? having said that .是什么结构? It is said that in Australia there is more land than the government knows what to do with it.这句话的结构和意思是什么 为什么是It is said that 而不是It said that It is said that that that that that man said is not that thatthat that woman said.翻译 it is said that the people who have friends live longer than the people who don't的句子结构是什么从句 有没有it was/had been + said that +从句这种结构若有的话那从句的时态用什么还是只有it is said that这种 it is said that通常翻译成? it is said that 什么时态 it said that ……后面是什么 It is said____ ____ was all ___ he said.It is said that that was all that he said. it is said that that was all that he said= it is said that that was what he said这两个句子相等吗? It is said that there is no weather in Britain. 语句:IT WAS SAID THAT THAT THAT THAT THAT BOY WROTE IS THAT.意思? 英语中如何用强调结构强调what从句在I don't understand what he said.句子如何改成It is.that.结构