it issaid结构讲解

It issaidthat…据说。

这种句型中it是形式主语，that引导的主语从句才是真正的主语。It is said that the early European playing-cards were designed for entertainment and education. 据说早期欧洲的纸牌是为娱乐和教育设计的。It is said that dogs will keep you company for as long as you want when you are feeling lonely. 据说当你感觉孤单时，狗会一直陪伴你，你需要它陪你多久它就陪你多久！也可以用Itissaidto句型，后面的不定式是真正主语。Well,it is said to have originated from sacrificing to the moon goddess.But,nowadays the full moon just represents the gathering of friends and family.据说最早以前是源于人们向月女神献祭；不过到了现代,满月只是代表朋友或家人的团圆而已.