it is said that是什么從句

it是形式主語(yǔ)，指代后置的主語(yǔ)從句。如果用正常語(yǔ)序that is said，其實(shí)就是 “one says＋that引導(dǎo)的賓語(yǔ)從句” 的被動(dòng)語(yǔ)態(tài)，未免主語(yǔ)部分太長(zhǎng)，顯得結(jié)構(gòu)臃腫，所以就改用 it is said that句式。

it is said that用法

it is said that是據(jù)說(shuō)，據(jù)傳言的意思

過(guò)去式，it was said that + 句子，【謂語(yǔ)用過(guò)去時(shí)】

現(xiàn)在時(shí)，it is said that +句子【謂語(yǔ)用現(xiàn)在時(shí)】

將來(lái)時(shí)，it will be said that +句子【謂語(yǔ)用將來(lái)時(shí)】

例句：

Someone says that she( works) as an actress.

It is said that she works as an actress.

She is said to work as an actress.