it is said that的固定结构可以改成 it was said that?

it is said that的固定结构可以改成 it was said that? It is said that是什么结构 It is said that. 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 1、other和else的用法区别2、关于It is开头的固定句型,要求完整（例：It is said that)包括其意思 据说 It is said that 是固定用法吗?be动词能否改变? it is said that后的从句用什么时态是固定的吗还是?例如It is said that the food at the restaurant ___（taste） quite berrible是tastes 为什么 It is believed that on December 21st,1891,the first basketball game in history was played.上面的句子是什么意思,It is believed that 是固定结构 为什么是It is said that 而不是It said that 英文据说的用法及造句it is said that it is said to beit is said to do 请帮各造些句. It says that ,It is said that和It is reported的意思和区别? 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 It is said that that that that that man said is not that thatthat that woman said.翻译 scientific view is that there is a reason if it can only be discovered.书上说if.only.是固定结构,尚欠缺的唯一条件,是固定结构吗 it was said that that that that that boy wrote is that这六个 that 的意思好嘛?） it's said that和it said that的区别 it is said that通常翻译成? it is said that 什么时态