it's a pity形式的主语从句关于虚拟语气it's a pity形式的主语从句谓语都要用should 我看不见得吧it's a pity that i can't go with you这句不是也没有毛病,但不是虚拟语气?

it's a pity形式的主语从句关于虚拟语气it's a pity形式的主语从句谓语都要用should 我看不见得吧it's a pity that i can't go with you这句不是也没有毛病,但不是虚拟语气? _____ we can't join in the party.A.It is a pity B.That is a pity C.It is a pity that 这题为什么选C?that 在主语从句中不是可以省略的么那是that放在句首的情况 如果用it作形式主语 that放后面 那就可以省略的 It's sad that this is normal.这个句子里的从句是什么从句?主语从句吗?但是拆成this is normal is sad- -就很奇怪 举个例子 What/It's a pity that……可以变成……is a pity,如果改成how sad……是不是就变成感 it's a pity 为什么pity要加a,it's a help和it's a pity是一样的形式吗?为什么有的名词可以直接It's n.不用带数. it引导的形式主语从句解析? It is a pity that he could not come .这句话是主语从句吗?请分析一下句子成分,It is unusual for him to be late .这里的it是形式主语，to be late是真正的主语，麻烦分析一下句子成分， 先行词和形式主语的区别（it)It is quite clear that the whole project is doomed to failure.It's a pity that you should have to leave.这两句话It 做先行词.It is necessary that…或It is a fact that… 中的It 是做形式主语,请 请问 关于表语从句和主语从句的一个问题 谢谢看语法书上讲主语从句和表语从句,有一点不明白. 第一句：It seemed that Tom is not coming to the party.书上说,这是主语从句,it是形式主语. 第二句：It s It is a pity that?(原句是：What a pity it is that you didnt arrive by day )It is a pity that?(原句是：What a pity it is that you didnt arrive by day 中的that you didnt arrive by day 是that 引导的主语从句吗? a pity it's Sunday. It's a pity..的疑问It's a pity he couldn't visit Mary.这是个定语从句吧?I could drive a car by the time I was sixteen.这是什么从句? It's a pity..的疑问It's a pity he couldn't visit Mary.这是个定语从句吧?I could drive a car by the time I was sixteen.这是什么从句? it's a pity that you can't join us 这句that引导的是什么从句? it is high time that...是什么从句? it is a pity that...是什么从句?在网上查这两个句型,说“it is high time that...”是定语从句? “it is a pity that...”是主语从句?怎么区别的?“it is”和“that”之间不都 在引起主语从句时..特别是主语从句在句首时..不能用if..除非是有形式主语it 的主语从句.求有形式主语it 的主语从句.是不是主语从句不在句首就可以用if引导. It is demanded / necessary / a pity + that…结构中的主语从句的谓语动词要用should 加动词原形,should 可省略.It is demanded / necessary / a pity + that…结构中的主语从句的谓语动词要用should 加动词原形,should it is a pity you won't accept this invetation.这句话是it做形式主语,后面的句子you won't accept this invetation做真正主语吗?怎么you前没that?请说明 请问下面这两个IT的含义和用法?1 It's 3 years since 从句；2 It look as if从句.如果是形式主语,也不对啊,SINCE和AS IF引导的都不是主语从句,