it was said that后用什么时态

it is said that后的从句用什么时态 it is said that后加什么时态 it is said that 什么时态 it was(is) ...that+什么时态 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 It be reported that 中的be用 is 还是was?还有that从句中用什么时态? it was said that the second world war broke out in 1939 时态 翻 It is said that…时态问题, It is said that that was all that he said. It was for the first time that后面从句用什么时态 it is/was the first time +that+clause中从句用什么时态? It is said that that was all that he said.这里面的3个that分别做什么成分?