关于主语从句的题目...It's uncertain ___(填that还是whether) he will go to Beijing.这里是“他去北京这一事实不确定”呢 还是“他是否去北京不确定”呢

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 关于主语从句的题目...It's uncertain ___(填that还是whether) he will go to Beijing.这里是“他去北京这一事实不确定”呢 还是“他是否去北京不确定”呢 it引导的形式主语从句解析? 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 hard to read him 和It's hard that read him,不定式做主语和名词性从句做主语的区别 I find it difficult to V 与 I find it's difficult to v是否能用当主句的主语与从句的主语...I find it difficult to V 与 I find it's difficult to v 能否用当主句的主语与从句的主语一致时从句的主语与谓语动词Be 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. 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, It's easy to abuse one's power.是什么结构的句子,是主语从句吗?请具体分析一下. it引导时间状语从句与it引导主语从句有什么区别比如It was October 1st,1949 when the People's Republic of China was founded.此句为什么是it引导的时间状语从句而不是it做形式主语引导主语从句,when在从句中 如果关系代词是代替定语从句中的宾语从句的主语,那么宾语从句中的主语也可省略吗?比如,It's a book which everyone says is too long. it 能不能带what引导的主语从句? it's not surprising that it has one of ...是that引导的什么从句呢?it's not surprising that it has one of the most beautiful beachesin the world主语从句是怎样的呢？ IT IS主语从句和强调句能写成IT'S么? It is true that he has made a very important discovery in chemistry.为啥是主语从句?对于”It's +形容词+其他“ 这类的一般都为主语从句吗？有没特例？ 英语状语从句问题今天上课老师说了一个口诀,有老师也是这么讲的吗,时条方让地,主语同谓语be.两者省略不可惜.从句主语是it,it's省略也可以.希望逐句翻译, 关于主语从句和表语从句的一个问题 急好几本语法书上都说：It seemed that he is not coming to the party.是主语从句,it是形式主语.It seemed as if he couldn't think of the right word.是表语从句.可是我觉得这两 关于高中英语语法----虚拟的几个疑惑虚拟语气在主语从句中的应用常用在It is (was)+形容词 / 过去分词+that引导的主语从句”的句型中的主语从句要用虚拟语气.主语从句的谓语用should+动词原