it 作形式主语造句
1.不定式主语。It's my pleasure to help you.
2.主语为从句。It's a pity that she can't come.
2.主语为从句。It's a pity that she can't come.
it做形式主语的句子
it 作形式主语主语从句有时为了考虑句子平衡，通常在主语从句处使用形式主语it，而将真正的主语从句移至句末。这分四种情况：(1) 对于以连词that引导的主语从句，通常用形式主语it替代主语从句：(2) 对于以连接代词(副词)引导的主语从句，可以使用形式主语代主语从句，也可直接在句首使用主语从句：(3) 对关系代词型what引导的主语www.souquanme.com从句，通常直接将主语从句放在句首。如：(4) 如果句子是疑问句，则必须用带形式主语it的结构：
1-1○连词that引导的主语从句，通常用形式主语it替代主语从句It is +名词+从句
It is a fact that… 事实是……；It is good news that … 是好消息；It is a question that … 是个问题；It is common knowledge that … 是常识类似的名词还有：a pity；a wonder；a good thing； no wonder； surprise等it is no surprise 毫不惊奇地例如
It is a mystery to me how it all happened.
这是怎么发生的，对我来说就是一个谜。It is common knowledge that the whale is not a fish.鲸鱼不是鱼，这是一个常识。It is no surprise that China is making progress on such fronts: the manufacture of large passenger aircraft and high-speed trains, research in yeast and aerospace.
中国在很多尖搜趣网端领域，如大飞机制造，高铁、干细胞、
航天航空研究等领域取得飞速发展一点都不惊讶。
It is +形容词+从句
1-1○连词that引导的主语从句，通常用形式主语it替代主语从句It is +名词+从句
It is a fact that… 事实是……；It is good news that … 是好消息；It is a question that … 是个问题；It is common knowledge that … 是常识类似的名词还有：a pity；a wonder；a good thing； no wonder； surprise等it is no surprise 毫不惊奇地例如
It is a mystery to me how it all happened.
这是怎么发生的，对我来说就是一个谜。It is common knowledge that the whale is not a fish.鲸鱼不是鱼，这是一个常识。It is no surprise that China is making progress on such fronts: the manufacture of large passenger aircraft and high-speed trains, research in yeast and aerospace.
中国在很多尖搜趣网端领域，如大飞机制造，高铁、干细胞、
航天航空研究等领域取得飞速发展一点都不惊讶。
It is +形容词+从句
宾语从句it做形式主语的句子
It代替从句作形式主语的常见句型
1. it 代替连词 that 引导的从句作形式主语。
1) it + be + 过去分词 + that 从句:
It's said that Tom has come back from abroad .
It was reported that dozens of children died in the accident .
可用于该句型的过去分词还有：known , thought , told , believed , hoped , announced ,expected , decided , suggested等，该句型常可以转换成含有宾语从句的复合句或者含有不定式作主补的简单句。如：
It's said that Tom has come back from abroad .
→People say that Tom has come back from abroad . →He is said to have come back from abroad .
2) It + be + 名词词组 + that www.souquanme.com从句:
It's a pity that he can't swim for his age .
It's a wonder that you could finish such a hard task in such a short time .
可用于该句型的名词词组还有：an honour , a good thing , a fact , a surprise , good news等。
3) It + be /seem + 形容词 + that 从句:
It is likely that they will beat us tonight .今晚很可能他们会赢我们。
It doesn't seem that she will give us a hand .她帮我们的可能性似乎不太大。
可用于此句型的开容词还有；wonderful , true , good , right , wrong , (un)important ,useless , surprising , clear , possible , unusual , lucky , certain 等。
4) It + seem / appear / happen + that 从句:
It seems that he enjoys pop songs very much .看来他非常喜欢流行歌曲。
It appears that Tom might change his mind .看来汤姆会改变主意。
It happened that I went out that day .碰巧我那天外出了。
2. it 代替连接代词或连接副词引导的从句作形式主语。
1) It is known (not decided , not made clear , found out , discussed , being discussed , being considered , a question , uncertain等) + 连接代词或连接副词引导的从句。
It is still a question when we shall have our sports meet . 我们将什么时候举行运动会还是一个问题。
It is uncertain whether he can attend this conference or not . 他能否来开会还不能确定。
2) It doesn't matter(doesn't matter too much , doesn't make too much difference等) + 连接代词或连接副词引导的从句。如：
It doesn't matter whether we go together or separately . 我们一起去还是分开去都可以。
It doesn搜趣网't matter too much to me what you do or where you go . 你做什么或去什么地方，对我都无关紧要
1. it 代替连词 that 引导的从句作形式主语。
1) it + be + 过去分词 + that 从句:
It's said that Tom has come back from abroad .
It was reported that dozens of children died in the accident .
可用于该句型的过去分词还有：known , thought , told , believed , hoped , announced ,expected , decided , suggested等，该句型常可以转换成含有宾语从句的复合句或者含有不定式作主补的简单句。如：
It's said that Tom has come back from abroad .
→People say that Tom has come back from abroad . →He is said to have come back from abroad .
2) It + be + 名词词组 + that www.souquanme.com从句:
It's a pity that he can't swim for his age .
It's a wonder that you could finish such a hard task in such a short time .
可用于该句型的名词词组还有：an honour , a good thing , a fact , a surprise , good news等。
3) It + be /seem + 形容词 + that 从句:
It is likely that they will beat us tonight .今晚很可能他们会赢我们。
It doesn't seem that she will give us a hand .她帮我们的可能性似乎不太大。
可用于此句型的开容词还有；wonderful , true , good , right , wrong , (un)important ,useless , surprising , clear , possible , unusual , lucky , certain 等。
4) It + seem / appear / happen + that 从句:
It seems that he enjoys pop songs very much .看来他非常喜欢流行歌曲。
It appears that Tom might change his mind .看来汤姆会改变主意。
It happened that I went out that day .碰巧我那天外出了。
2. it 代替连接代词或连接副词引导的从句作形式主语。
1) It is known (not decided , not made clear , found out , discussed , being discussed , being considered , a question , uncertain等) + 连接代词或连接副词引导的从句。
It is still a question when we shall have our sports meet . 我们将什么时候举行运动会还是一个问题。
It is uncertain whether he can attend this conference or not . 他能否来开会还不能确定。
2) It doesn't matter(doesn't matter too much , doesn't make too much difference等) + 连接代词或连接副词引导的从句。如：
It doesn't matter whether we go together or separately . 我们一起去还是分开去都可以。
It doesn搜趣网't matter too much to me what you do or where you go . 你做什么或去什么地方，对我都无关紧要
it作形式主语常见句式 有哪些
it作形式主语常见句式
动词不定式，动名词或主语从句作主语时，通常把它们放在谓语动词前，而用it作形式主语，放到句首，常见句型有：
1. It + be + 形容词+主语从句，如：
It is uncertain whether he can come to Jenny’s birthday party or not.
2. It + be + 名词词组 + 主语从句，这类名词有：a fact, a pity, a shame, an honour，a question等，如：
It’s a pity that you missed the exciting football match. It remains a question whether he will come or not.
3. It + be + 过去分词 + 主语从句，这类过去分词有：announced, believed, expected, hoped, decided, reported, said, shown等， 如：
It is reported that 16 people were killed in the earthquake. It is not decided who will give the operation to the patient. 4. It + 不及物动词(seem, appear, happen等) + 主语从句, 这类不及物动词有：appear, happen, seem等， 如： It seemed that he didn’t tell the truth. It happened that I was out when he called. 5. It + be + 形容词 + for sb.）+ 动词不定式
这类句型常用形容词easy, difficult, hard, important, possible，wise等作表语，有时候为了强调不定式动作的执行者，常在不定式前加for sb，如：
It’s necessary for the young to master two foreign language. It is unwise to give the children whatever they want.
这类形容词有：easy, difficult, hard, important, possible，wise 6. It + be + 形容词 + of sb. + 动词不定式，这类形容词常是表示心理品质,性格特征的形容词，如：kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, considerate等。某人和这些形容词可以构成主系表结构。如：
It’s very kind of you to help me with the work. =You are kind to help me.
It seemed selfish of him not to share his dictionary with others. =He seemed selfish not to share his dictionary with others. 7. It + be +名词词组 + 动词不定式，如： It is not a good habit to stay up too late.
8. It + be + 名词或形容词 + 动名词，这类名词和形容词常常是：good, no good, no use, a waste of, useless, senseless等，如：
It’s a waste of time talking to her any more. It is no use arguing about the matter with him.
9. It + take ( sb. )+ 时间（金钱）+ 动词不定式，如：
It took the workers almost three years to finish building the dam.
It will take a whole day to get to the top of the mountain 搜趣网on foot.
动词不定式，动名词或主语从句作主语时，通常把它们放在谓语动词前，而用it作形式主语，放到句首，常见句型有：
1. It + be + 形容词+主语从句，如：
It is uncertain whether he can come to Jenny’s birthday party or not.
2. It + be + 名词词组 + 主语从句，这类名词有：a fact, a pity, a shame, an honour，a question等，如：
It’s a pity that you missed the exciting football match. It remains a question whether he will come or not.
3. It + be + 过去分词 + 主语从句，这类过去分词有：announced, believed, expected, hoped, decided, reported, said, shown等， 如：
It is reported that 16 people were killed in the earthquake. It is not decided who will give the operation to the patient. 4. It + 不及物动词(seem, appear, happen等) + 主语从句, 这类不及物动词有：appear, happen, seem等， 如： It seemed that he didn’t tell the truth. It happened that I was out when he called. 5. It + be + 形容词 + for sb.）+ 动词不定式
这类句型常用形容词easy, difficult, hard, important, possible，wise等作表语，有时候为了强调不定式动作的执行者，常在不定式前加for sb，如：
It’s necessary for the young to master two foreign language. It is unwise to give the children whatever they want.
这类形容词有：easy, difficult, hard, important, possible，wise 6. It + be + 形容词 + of sb. + 动词不定式，这类形容词常是表示心理品质,性格特征的形容词，如：kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, considerate等。某人和这些形容词可以构成主系表结构。如：
It’s very kind of you to help me with the work. =You are kind to help me.
It seemed selfish of him not to share his dictionary with others. =He seemed selfish not to share his dictionary with others. 7. It + be +名词词组 + 动词不定式，如： It is not a good habit to stay up too late.
8. It + be + 名词或形容词 + 动名词，这类名词和形容词常常是：good, no good, no use, a waste of, useless, senseless等，如：
It’s a waste of time talking to her any more. It is no use arguing about the matter with him.
9. It + take ( sb. )+ 时间（金钱）+ 动词不定式，如：
It took the workers almost three years to finish building the dam.
It will take a whole day to get to the top of the mountain 搜趣网on foot.
英语 it作形式主语 我想要例句！！
这个例句就很多了。
①完成家庭作业对孩子来说，太难了。
It's really too difficult for children to finish their homework.
②忘记女友对他来说是不可能的
It's impossible for to forget his girlfriend.
在这两个句子中，it都是形式主语，正真的主语是后面的动词不定式。
①完成家庭作业对孩子来说，太难了。
It's really too difficult for children to finish their homework.
②忘记女友对他来说是不可能的
It's impossible for to forget his girlfriend.
在这两个句子中，it都是形式主语，正真的主语是后面的动词不定式。
