“it +be +过去分词+从句” 结构 你说的“it+be+过去分词+从句”是主语从句.原先，是由宾语从句变来的：They say that he enjoys classic music(宾语从句)-（主语从句）：It is said that he enjoys classic music.分析：It（形式主语）i.
be+v.过去分词+by/with绝对正确吗，若有反例请举出 一、一般现在时：1.概念：经常、反复发生的动作或行为及现在的某种状况.2.时间状语：always，usually，often，sometimes，every week(day，year，month…)，once a week，on Sundays，3.基本结构：动词 原形（如主语为第三人称单数，动词上要加（e）S）4.否定形式：am/is/are+not；此时态的谓语动词若为行为动词，则在其前加don't，如主语为第三人称单数，则用doesn't，同时还原行为动词.5.一般疑问句：把be动词放于句首；用助动词do提问，如主语为第三人称单数，则用does，同时，还原行为动词.6.例句：.It seldom snows here.He is always ready to help others.Action speaks louder than words.二、一般过去时：1.概念：过去某个时间里发生的动作或状态；过去习惯性、经常性的动作、行为.2.时间状语：ago，yesterday，the day before yesterday，last week(year，night，month…)，in 1989，just now，at the age of 5，one day，long long ago，once upon a time，etc.3.基本结构：be动词；行为动词4.否定形式：was/were+not；在行为动词前加didn't，同时还原行为动词.5.一般疑问句：was或were放于句首；用助动词do的过去式did 提问，同时还原行为动词.6.例句：She often came to help us in 。
关于主语从句造句 It’s a pity that you can’t go with usIt is clear that he was telling the truth.It is said that he has been there many times.It seems that the things is possible.
