用It写一个句子再用the表达

【第1句】： 用it作形式主语写一个句子,代替句子

是的 it 作形式主语，主要分为下列三种情况：不定式作主语、动名词作主语 和 名词从句作主语。

具体分析如下 不定式作真正主语 主要用于下列句型： ⒈It + is/was + adj./n. （形容词或名词） +to do sth. A. 名词作表语。主要有a pity,a pleasure,an idea等。

例如： In fact________is a hard job for the police to keep order in an important football match. (2001上海高考题) A. this B. that C. there D. it （答案为D） 动名词作真正主语 用于这种形式的是一些特定的形容词和名词。例如： It was nice meeting you. 见到你真高兴！ （分别时用） 它与不定式作真正主语的区别在于，动名词说到的动作已经发生。

例如： It is nice to meet you. （刚刚见面时用） it 作形式主语，动名词作真正主语主要用于下列句型： It's +n.（名词或名词短语）/adj.（形容词）+ doing sth. 1）下列形容词后常用动名词作真正主语：nice,good,useless,hard,foolish,enjoyable,worthwhile等。例如： It is nice talking to you. 跟你交谈真是愉快。

It's foolish behaving like that. 这样的表现是很愚蠢的。 It is useless doing that. 那样做没用。

名词从句作真正主语 用it 作形式主语的结构主要用于下列句型： It +谓语+名词从句（主语从句、表语从句、同位语从句） ⒈It is +名词+从句： 这样的名词有a fact,a surprise,an honor（非常荣幸），a pity,common knowledge（常识）等。例如： It is common knowledge that the full moon brings fair weather. 皓月兆天晴，这是常识。

【第2句】： 造一个含有it用法的英语句子,并且简单说明是哪种用法

一、作人称代词，可用来代替人、物或事。

—Who is knocking at the door？—It's me

The ant is not gathering this food for itself alone. Ithas two stomachs in its body.蚂蚁不 只是为自己采食。 它的身体里有两个胃。

When service is interrupted, as it was by last night'sstorm, John has to inform the pu blic what the company isdoing about the problem.每当供电中断时，就像昨夜因暴风雨而造成的那样 ，约翰就必须通知大家，公司为解决这个问题正在做些什么。

二、作非人称代词，表示时间、天气、季节、距离、环境等。

It is tea time. Mrs Tuner goes into the kitchen.It was winter. it was ten degree below zero.

It is only half an hour walk to the tall tower.

It will be lovely in the park today.

三、作先行词。

【第1句】：作形式主语。英语中不定式、动名词、主语从句在作主语时主语往往显得很长，使整个句子看上去有点 头重脚轻，这样就借助“it”来作形式上的主语，而把真正的主语移到句子后边去，使全句看上去平稳一些。 “it”没有实际的意义。

It is fun for her to study, but it is difficult to studyand work at the same time.对于她来 说学习是有趣的，可是要边工作边学习对她来说是困难的。

It is necessary for them to get an electrician to do thework for them.对他们来说请一位电工 来为他们做这项工作是必要的。

It will be no good learning without practice.

It is no use talking to him about it.

It is possible that they're finished the bridge.。

It is important that we should learn from each other andhelp each other.

【第2句】：作形式宾语。这种情况通常只用于能带以名词或形容词作宾语补语的动词后面。

In the 1870's, when Marx was already in his fifties, hefound it important to study the si tuation in Russia, so hebegan to learn Russian.在19世纪70年代，马克思已经五十几岁了，他觉得研 究俄国的形势很重要，便开始学习俄语。

This has made it necessary for agriculture and industryto develop very quickly.这就使得工 农业必须飞速发展。

四、构成强调句型。为了强调句子的某一成分，把引导词“it”用在句首，这种强调句的结构是“It is (was )+所强调的成分（主语、宾语、状语）+that…”，表达的意思为“是…，正是…，就是…”。“it ”在这种句型中本身没什么实际意义。

My temperature! It's my back that hurts.

It is not only blind men who make such stupid mistakes. 这里需要说明的是：如被强调的是人，则后面用who或that， 如被强调的是物或其他情况，则用that。

It was yesterday that I met Bob in your room.

It was in your room that I met Bob yesterday.

It was Bob that I met in your room yesterday.

【第3句】： 英语,单单一个句子,是it's the best还是it's best

如果是单单一个句子，准确表达是：

It's the best. = It is the best.

它是最好的。

如果句子有补充，可以是：

It's best to + 原型动词。

例如：

It's best to go home now.

It's best to tell her the truth.

It's best to finish the job before it gets dark.

【第4句】： 关于It的六种基本句型和例句

【第1句】： 陈述句的强调句，强调陈述句中的某个成分. 为了强调句子中的有些成分，要用强调结构It is(was)+被强调部分+that(who)+其他部分.被强调的成分可以是主语、宾语、状语，但不能是定语表语和谓语.这种类型的强调句主要注意一下几个方面： 1)It在这一结构中作主句的主语，所以即使被强调部分是复数名词，也要用is或was. e.g. Tom and Mark often come to see me. It is Tom and Mark Who often come to see me. （强调主语） 2）如果被强调部分是时间、地点、方式或原因也不用when, where, how, why， 而用that；强调人时可用who，也可用that. e.g.(1)They set out the day before yesterday. It was the day before yesterday that they set out （强调时间状语） （2）We put off the sports meet because of the rain. It was because of the rain that we put off the sports meet（强调原因状语） （3）It was because she was ill that they didn't ask her to do the job. （强调原因状语从句） 3）被强调部分如果是原句的主语，who或that后面谓语的人称和数应和原句的主语一致. — Personally, I think it is the salesmanager, rather than the salesgirls, ____ to blame. —I agree with you. A. is B. that is C. are D. who are 【第2句】： 一般疑问句的强调句，只需把is(was)提前. e.g. (1) Was it in 1939 that the Second World War broke out? (2) Is it Professor Wang who teaches you English? (3) —Was it two months ago _____ you luckily got an opportunity to spend your holiday in Canada？ — _____. John was the lucky dog…… A. when; Not I B. when; Not only C. that; Not all D. that; Not me 【第3句】：特殊疑问句的强调句，强调特殊疑问句中的疑问词. e.g. (1) Where did you find the wallet? Where was it that you found the wallet (2) When shall we meet? When is it that we shall meet？ 从上面的例子中我们可以看出，特殊疑问句的强调句是由“特殊疑问词+was(is) it that +陈述句”构成的.但是当含有特殊疑问词的强调句型用在宾语从句中的时候，上述句型应改为‘特殊疑问词+it was( is) that +陈述句“，即采用陈述句语序. e.g. (1) — where was it ____ the road accident happened yesterday？ — In front of the market. A. when B. that C. which D. how (2) I really don't know _____ you returned the book to me. A. when it was that B. when was it C. when was it that D. when it was 【第4句】： 有时可用It might be ……that ……，和It must have been……that……的句型表示强调. e.g. (1)It might be his father that you are looking for. (2)It must have been his brother that you met. 【第5句】： 强调not……until结构中由until引导的短语（或从句）表示时间状语的句型是：It is(was) not until……+that……+其他部分. e.g. 1)He didn't marry until forty. It was not until forty that he married. (2)Mr. Yang did not leave the lab until he got everything ready for the experiment. It was not until he had got everything ready for the experiment that Mr. Yang left the lab. (3)_____ he realized it was too late to return home. A. Not until dark B. It was until dark that C. It was not until dark that D. It was dark that注意：如果not……until放在句首时就要用部分倒装句式，它的语序和在not……until结构中由until引导的短语（或从句）表示时间状语的句型中的语序不同. 【第6句】： 强调词it与先行词it的区别. 强调词it与先行词it的区别可以通过恢复原句的方式来判断，即如果把it is……that……去掉后剩下的成分仍然能组成一个完整的句子，这就是强调句型，否则就不是. It is there that accidents often happen. → Accidents often happen there. 以上就是强调句型，被强调成分是状语，把it is……that……去掉，还原成后来的非强调句. It is clear that not all boys like football. 上面的句子如果去掉it is……that……后就成了Clear not all the boys like football.很显然这不是一个完整的句子，因此不是强调句型，而是由it作先行词引导的一个主语从句. 【第7句】： 其他的一些强调句型： It is/was+时间段+since从句，It +时间段+before从句，It is/was+时间点+when从句. 1)It is/was + 时间 + since …，从……已多久了.在这个句型中，主句通常用一般现在时，since从句用过去时，表示一个时间点. e.g.(1)It is five months since I arrived in New York. 我到纽约已五个月了. （2）It is five months since I was in New York.我离开纽约已经五个月了. 注意：例句中five months是作为一个整体看待的，所以用it is.在这类句子中，终止性动词表示从动作发生时算起；如果是状态动词或持续性动词，则从动作或状态结束时算起. 2)It is + 时间+ before ….在这个句型和上面一个句型中，时间都是时间段，如years,five days,twenty minutes等.不过主句的时态多用一般将来时或一般过去时，从句的时态要根据主句的时态进行变化.Before前的主句如果是肯定的，翻译成“在……之后才……” 主句如果是否定的，翻译成“不久就……” e.g.(1)It was long before he gave an answer. 过了好久他才答复我. （2）It was not long before he worked out the difficult maths problem. 不一会儿他就把那道数学题解出来了. （3）It will be 。

【第5句】： 关于it作形式宾语的句子

make sth to the public，表示“告知公众、让公众知道”

to the public这里可以先忽略，

They haven't made it where they are to hold the conference.

they主语，haven't made谓语，it形式宾语，where引导的句子是真正的宾语。

如果把形式宾语去掉：

They haven't made [where they are to hold the conference] to the public.

"他们还没有告知公众，将要在哪里召开大会。"

【公益慈善翻译团】真诚为您解答！

【第6句】： 将下列句子换一种表达法

【第1句】：I' a long river. The river is very long.

【第2句】：I's a big lake. The lake is very big.

【第3句】：It's a famous school. The shool is very famous.

【第4句】：They are beautiful photos. The photos are very beautiful.

【第5句】：It's my lovely hometown My hometown is very lovely.

【第7句】： 【下面的句子可以用另一种方式表达,1

1 what do you want to do in the summer holidays?2 how about going/why not go abroad for a holiday?3 what about going to beijing by plane?4 excuse me,can you tell me the way to the Tong hotel?5 It is exciting to go skiing in australia.加油。

【第8句】： 关于It的六种基本句型和例句

【第1句】： 陈述句的强调句，强调陈述句中的某个成分。

为了强调句子中的有些成分，要用强调结构It is(was)+被强调部分+that(who)+其他部分。被强调的成分可以是主语、宾语、状语，但不能是定语表语和谓语。

这种类型的强调句主要注意一下几个方面： 1)It在这一结构中作主句的主语，所以即使被强调部分是复数名词，也要用is或was. e.g. Tom and Mark often come to see me. It is Tom and Mark Who often come to see me. （强调主语） 2）如果被强调部分是时间、地点、方式或原因也不用when, where, how, why， 而用that；强调人时可用who，也可用that. e.g.(1)They set out the day before yesterday. It was the day before yesterday that they set out （强调时间状语） （2）We put off the sports meet because of the rain. It was because of the rain that we put off the sports meet（强调原因状语） （3）It was because she was ill that they didn't ask her to do the job. （强调原因状语从句） 3）被强调部分如果是原句的主语，who或that后面谓语的人称和数应和原句的主语一致。 — Personally, I think it is the salesmanager, rather than the salesgirls, ____ to blame. —I agree with you. A. is B. that is C. are D. who are 【第2句】： 一般疑问句的强调句，只需把is(was)提前。

e.g. (1) Was it in 1939 that the Second World War broke out? (2) Is it Professor Wang who teaches you English? (3) —Was it two months ago _____ you luckily got an opportunity to spend your holiday in Canada？ — _____. John was the lucky dog…… A. when; Not I B. when; Not only C. that; Not all D. that; Not me 【第3句】：特殊疑问句的强调句，强调特殊疑问句中的疑问词。 e.g. (1) Where did you find the wallet? Where was it that you found the wallet (2) When shall we meet? When is it that we shall meet？ 从上面的例子中我们可以看出，特殊疑问句的强调句是由“特殊疑问词+was(is) it that +陈述句”构成的。

但是当含有特殊疑问词的强调句型用在宾语从句中的时候，上述句型应改为‘特殊疑问词+it was( is) that +陈述句“，即采用陈述句语序。 e.g. (1) — where was it ____ the road accident happened yesterday？ — In front of the market. A. when B. that C. which D. how (2) I really don't know _____ you returned the book to me. A. when it was that B. when was it C. when was it that D. when it was 【第4句】： 有时可用It might be ……that ……，和It must have been……that……的句型表示强调。

e.g. (1)It might be his father that you are looking for. (2)It must have been his brother that you met. 【第5句】： 强调not……until结构中由until引导的短语（或从句）表示时间状语的句型是：It is(was) not until……+that……+其他部分。 e.g. 1)He didn't marry until forty. It was not until forty that he married. (2)Mr. Yang did not leave the lab until he got everything ready for the experiment. It was not until he had got everything ready for the experiment that Mr. Yang left the lab. (3)_____ he realized it was too late to return home. A. Not until dark B. It was until dark that C. It was not until dark that D. It was dark that注意：如果not……until放在句首时就要用部分倒装句式，它的语序和在not……until结构中由until引导的短语（或从句）表示时间状语的句型中的语序不同。

【第6句】： 强调词it与先行词it的区别。 强调词it与先行词it的区别可以通过恢复原句的方式来判断，即如果把it is……that……去掉后剩下的成分仍然能组成一个完整的句子，这就是强调句型，否则就不是。

It is there that accidents often happen. → Accidents often happen there. 以上就是强调句型，被强调成分是状语，把it is……that……去掉，还原成后来的非强调句。 It is clear that not all boys like football. 上面的句子如果去掉it is……that……后就成了Clear not all the boys like football.很显然这不是一个完整的句子，因此不是强调句型，而是由it作先行词引导的一个主语从句。

【第7句】： 其他的一些强调句型： It is/was+时间段+since从句，It +时间段+before从句，It is/was+时间点+when从句。 1)It is/was + 时间 + since …，从……已多久了。

在这个句型中，主句通常用一般现在时，since从句用过去时，表示一个时间点。 e.g.(1)It is five months since I arrived in New York. 我到纽约已五个月了。

（2）It is five months since I was in New York.我离开纽约已经五个月了。 注意：例句中five months是作为一个整体看待的，所以用it is.在这类句子中，终止性动词表示从动作发生时算起；如果是状态动词或持续性动词，则从动作或状态结束时算起。

2)It is + 时间+ before …。在这个句型和上面一个句型中，时间都是时间段，如years,five days,twenty minutes等。

不过主句的时态多用一般将来时或一般过去时，从句的时态要根据主句的时态进行变化。Before前的主句如果是肯定的，翻译成“在……之后才……” 主句如果是否定的，翻译成“不久就……” e.g.(1)It was long before he gave an answer. 过了好久他才答复我。

（2）It was not long before he worked out the difficult 。