It seems that it is going to rain.我在语法书上看到此句为“It 做形式主语的主语从句”和“表语从句”
用法：
1、seem(系动词）+形容词
eg:He seems very angry.他好像十分生气
2、seem+名词
eg:He seems a nice man.他看起来是个好人
3、seem like.意为“好像,似乎.”
eg:It seemed like not a bad idea at the time.当时这主意好像不错
4、seem to do sth 意为“似乎”
eg:I seem to have left my book at home.我大概是把书忘在家里了
5、It seems that+从句 意为“看起来好像.”
eg:It seemed that he was very happy.他看上去好像很高兴
扩展资料
同义词辨析：
look appear seem 【词义：看似，看起来】
1 It seems that she likes you(主语从句)--------简单句：She seems to like you
2 It seems that she is reading something--------------She seems to BE READING something.
3 It seems that she has done her work.----------------She seems to HAVE done her work
4 It seems that she was here last week.-------------------She seems to HAVE BEEN here last week.
5 It seemed that she knew everyone there--------She seemed to KNOW everyone there.
it (形式主语)seems （谓语）that she likes you （真正主语） that是引导词，she- - -you是真正主语
It （It 做形式主语，而且这是主语从句）seems that it（表语从句，由that来引导） is going to rain。没错。
主从复合句是完全可以有2个句型的：
（1）第一个it 是主句的主语,真正的主语为后边that引导的的从句；seems是seem的“单三”形式，翻译成“看起来”，注意：它是半系动词，所以从句为表语从句——“主语+seems+表语”。
（2）第二个it做从句的主语，指的是“天气”。
表语成分
表语是用来说明主语的身份、性质、品性、特征和状态的，表语常由名词、形容词、副词、介词短语、不定式、动词的-ing、从句来充当。
它常位于系动词（be, become, appear, seem,look,sound,feel,get,smell等词）之后。如果句子的表语也是由一个句子充当的，那么这个充当表语的句子就叫做表语从句。
It （It 做形式主语，而且这是主语从句）seems that it（表语从句，由that来引导） is going to rain。所以没错
ZhenglanShen , 你好：
我看了几位高手给出的解释，我有不同观点，在此狗尾续貂了：
首先，主从复合句是完全可以有2个句型的：
（1）第一个it 是主句的主语,真正的主语为后边that引导的的从句；seems是seem的“单三”形式，翻译成“看起来”，注意：它是半系动词，所以从句为表语从句——“主语+seems+表语”。
（2）第二个it做从句的主语，指的是“天气”。
补充：“I think it's ok.(不能称为宾语从句，只能叫复合句）”。
个人观点：我认为你自己举得例子，就上面那个句子，是个标准的 复合句中的 宾语从句。
复合句只是个框架集合，它可以包括：主语从句，宾语从句，表语从句，同位语从句，定语从句，状语从句，等等。
呵呵呵 首先， 第一个“it”是做形式主语。 第二个“it” 是标语从句
ITseems that \\\\\是一个固定句型。。。。其中it为形式主语。在这个句子里。。指 要下雨这个事实
如果后面跟了that作为从句it 是指 天要下雨
倪琼欣坤：[答案] it充当形式主语,真正的主语是that后面的主语.例如:It seems that she is ill.she 才是真正主语.
蕉城区19346822716： it seems that 的用法 - ？
倪琼欣坤：[答案] 原本这个It 是形式主语, 见下例 他好像是个学生 It seems to be true that he is a student 这样说的话, it 就很好理解了, 见下面分析: It (形式主语)seems (系动词)to be true(表语) that he is a student(真正主语-主语从句) 可随着语言的演变...
蕉城区19346822716： it seems that等于什么? - ？
倪琼欣坤： 例如:It seems that he is happy.=He seems to be happy.=He seems happy.
蕉城区19346822716： it seems that 句型是主语从句还是表语从句 - ？
倪琼欣坤：[答案] 原本是主语从句 如: 他好像是个学生 It seems to be true that he is a student. 慢慢地,为了方便,to be true 就没了!于是就成了: It seems that he is a student. 教材上还是把这个看成表语从句的.It 看成一个无意义的功能词汇
蕉城区19346822716： 请问 It seems that 和 It seems 有区别吗? - ？
倪琼欣坤： 1、两个后面都不可以加逗号. 2、it seems 后面可以接的形式大概有三种:第一种“it seems that...”意思上表示的是“看上去,似乎”,后跟陈述语气的句子.也可以转换成 名词或代词 + seem + 动词不定式的句型,其原意不变.如果动词不...
蕉城区19346822716： it seems that 是什么用法 - ？
倪琼欣坤： it seems that ... 意思是 “看起来好像”,例如: ~It seems that you are letting things get you down. 看上去你快要累趴下了.~ It seems that he is not quite himself today. 他今天好像不怎么舒服.这种结构也可以改用 one seems to do sth.,所以上面的句子也可以改写如下: ~You seem to be letting things get you down.~ He seems to be not quite himself today.
蕉城区19346822716： It seems that...=什么? - ？
倪琼欣坤：[答案] It seems that 的同义句是 It appears that ... It appears that the two leaders are holding secret talks. 两位领导人好像在举行秘密会谈. It seems that we have missed our chance.好像我们已失去了机会.
蕉城区19346822716： It seems that 是固定搭配吗,有it seemed that 吗 - ？
倪琼欣坤： 可以看作是固定搭配.二者都可以有.前者是一般现在时后者是一般过去时
蕉城区19346822716： It seems that it will going to snow tomorrow.这句话通顺吗? - ？
倪琼欣坤：[答案] 不通顺 知识点:【be going to do】=【will do】将要做 但两者不可共用 所以句子要改为:It seems that it is going to snow tomorrow. 或者It seems that it will snow tomorrow. 翻译:似乎明天要下雪了.
蕉城区19346822716： it seems that 从句,中从句是做主语还是表语? - ？
倪琼欣坤： 你好,It seems that 引导的从句既可以是表语从句也可以是主语从句,不过我们经常见到的是表语从句哦.
