it的用法和练习(带答案)

重点代词it的用法和练习（含答案）

(1)it用做人称代词的用法

it用作代词，意为“它”，既可以指人，也可以指物。it做人称代词，可以用来代替一个名词、短语、从句或句子，以避免他们在句中的重复。这是可以指提到过的，也可以指未提到的，在句中做主语、表语和宾语。

1)指事物，it可以知道除人以外的任何事物或动物。

I dropped my watch and it broke.我把手表掉在地上摔坏了。

2)指人，it主用用于指性别不明的婴儿或只听其声不见其人的人，如：

Is it a boy or a girl?是男孩还是女孩？

There is a knock on the door. It must be the postman.

“Listen. Someone is crying..”“Oh, it must be Mary.”

3）代替某些代词。

代词it可以用于代替指示代词this, that以及复合不定代词something, anything, nothing等，如：“What’s this?”“It’s a new machine”

(2)it用作非人称代词的用法

1)it用作非人称代词主要用来指时间、距离、价值、天气、气温及温度等自然现象。如

It’s too late to go there now.现在去那已经太迟了。

It rained all day yesterday.昨天下了一整天雨。

2)用于某些句型。

It’s time for sth. 该做某事了。

It’s to do sth. 是时候该做某事了。

It’s time for sb to do sth. 某人该干某事了。

It’s (about/high) time +that--从句。某人该做某事了。（从句谓语用过去式，有时候用should+动词原形）

It’s first(second)time +that--从句。某人第几次干某事。（从句谓语动词用现在完成时）

It’s +时间段+since从句。自从…以来有一段时间了。

It’s +时间段+before 从句。过多长时间才…

(3)it用作形式主语的用法。

1)当不定式、动名词、从句等复杂成分做句子主语时，为保持句子的平衡，通常把真正的主语放

在句末，而句首使用形式主语it。如

It’s very important to remember this.

It’s hard work climbing mountains.

It’s unknown when he will come.

2)it用作形式主语的重要句型。

①It+be+adj.+for(of)sb to do sth. 某人做某事…

It is hard for him to make up his mind.他很难下定决心。

It was foolish of her to say such a thing.她说那样的话，太愚蠢了。

提示：此句型中的介词of和for的区别是：of用于指某人的性格，属性，特征等。介词for表示对象，意为“对…来说”。

②It takes/took sb+时间段+to do sth.某人做某事花了…时间。

It took me two hours to finish my homework.

③It is up to sb to do sth.该由某人做某事了。

It’s up to you to make the choice.该由你来做选择了。

④It looks(seems,appears,happens,occurs) that (as if) …似乎…

It seems as though he didn’t recognize me.

(4)it用作形式宾语的用法。

1)当不定式、动名词、从句等复杂成分用作宾语且后面跟有宾语补足语时，通常会在宾语补足语

前使用it作形式宾语，而将真正的宾语移至句末。其基本结构为“动词+it+宾语补足语+不定式（动名词或从句）”

I find it difficult to do the job well.

I think it best that you should stay here.

We think it no use complaining.

2)用作形式宾语的几个特殊结构：

①动词+it+that-从句

I think it (that) he will come on time.

②动词+it+when(if)-从句

We rally appreciate it when she offered to help.

③动词+prep.+it+that-从句

I can’t answer for it that he will come.我不能保证他会来。

④动词+it+介词短语+that-从句

I took it for granted that he would help us.

(5)it在强调句中的用法。

强调句的基本结构是：It+be+被强调部分+that(who)+其他部分。

It was a computer that he bought last week.

练习部分

1. I like in the autumn when the weather is clear and bright. A. this B. that

C. it

D. one

[解析] C.句中like为及物动词,后面需要跟宾语.而like之后不可直接接从句作宾语.it可用于某些动词(hate, appreciate…)和介词之后作笼统宾语.

2. He was nearly drowned once.

When was ?

was in 1998 when he was in middle school.

A. that; It

B. this; This

C. this; It

D. that; This

[解析]A. 第一空用that指代上文提到的事情; 第二空用it指代第一空的that

3. The Parkers bought a new house but will need a lot of work before they can move in.

A. they

B. it

C. one

D. which

[解析] B此处it指代前面出现的a new house. it指代上文提到的同一事物,为特指;而one通常指代同类事物中的某一个.

4. Someone is ringing the doorbell. Go and see .

A. who is he

B. who he is

C. who is it

D. who it is

[解析] D此处it用作人称代词,指不明身份,性别的人;宾语从句应用陈述语序.

5. In fact is a hard job for the police to keep order in an important football match.

A. this

B. that

C. there

D. It

[解析] D此处it用作形式主语.

6. Mike’s mother kept telling him that he should work hard, but didn’t help.

A. he

B. it

C. she

D. which

[解析] B此处it用以指代前面的句子,可用that替换.

7. Since you have repaired my computer, is no need for me to buy a new one.

A. it

B. there

C. this

D. that

[解析] B考查固定句型There is no need for sb to do sth

8. The official made clear that he would do everything possible to solve the problem.

A. it

B. this

C. that

D. him

[解析] A此处it用作形式宾语.

9. Do you like here?

Oh, yes, the air, the weather and the way of life. Everything is so nice.

A. this

B. there

C. that

D. it

[解析] D此处it泛指自然环境.

10. Bill’s aim is to inform the viewers that cigarette advertising in TV is illegal, ?

A. isn’t it

B. is it

C. isn’t he

D. is he

[解析]A主语为“Bill’s aim”.

11. is mentioned above, the number of the students in senior high school is increasing.

A. which

B. As

C. That

D. It

[解析] B非限制性定语从句中, as /which均可指代整句话的内容,但which只能放在主句后,译为“这一点”; as则位置灵活,译为“正如”.

12. It was with great joy he received the news that his lost daughter had been found.

A. because

B. which

C. since

D. that

[解析] D考查强调句型.

13. It was back home after the experiment.

A. not until midnight did he go

B. until midnight that he didn’t go

C. not until midnight that he went

D. until midnight when he didn’t go[解析] C考查not unt il结构强调句型.

14. Why! I have nothing to confess. You want me to say?

A. What is it that

B. What it is that

C. How is it that

D. How it is that

[解析] A考查强调句型的特殊疑问句句式.

15. It is the ability to do the job matters not where you come from or what you are.

A. one

B. that

C. what

D. it

[解析] B考查强调句型.被强调部分是not where you come from or what you are (but ) the abi lity to do the job.为了平衡结构,部分移至句尾

1. （据报道）a lot of people lost their jobs in the city last month.(report)

2. （据报道）, a lot of people lost their jobs in the city last month.(repor t)

3. （毫无疑问）he will be admitted to the key university.(doubt)

4. He has made some great movies. （这一点是毫无疑问的）.(doubt)

5. （没必要）for you to get up early tomorrow.(need)

6. （碰巧）I had been away when he called.(happen)

7. （看来）nobody knows what has happened.(seem)

8. （看起来似乎）it's going to rain.(look)

9. （很可能）the thieves don’t know how much it is worth.(likely)

10. （我也许可以）to leave a message for her.(possible)

1. It’s repo rted that

2. As is reported

3. There is no doubt that

4. There is no doubt abo ut it

5. There is no need

6. It happened that

7. It seems that

8. It looks as if

9. It’s likely that 10.It’s possible for me

11. It’s no use （为打翻的牛奶而哭泣）.(cry)

12. （抱怨是毫无用处的）, they never listen.(use)

13. （难怪）you’ve achieved so much success.(wonder)

14. (很明确）most of the farmers have brought in more money by all me ans.(certain)

15. （据说）the professor has already succeeded in carrying out this experi ment.(say)

16. The professor is said 已成功）in carrying out this experiment.(succeed)（比较句型15）

17. （感到遗憾）I haven’t been to the get-together.(pity)

18 （使之成为一种惯例）that I get up at six every day in the morning.(rul

e)

19. I （认为有必要）to take plenty of hot water every day.(think)

20. It’s high time that we （采取措施）to stop pollution.(take)

11. crying over spi lt milk 12. It’s/There is no use complaining 13. It’s no wonder that

14. It’s certain that 15. It’s said that 16. to have succeeded 17. I feel it a pity tha t

18. I have made it a rule 19. think it (is) necessary 20. took/should take measu res

21. （要花费她很长时间）to recover from the illness.(take)

22. This/It is the third time that I （看那部电影）.（see）

23. It was the first time that she （到长城）.（be）

24. It is / has been two years （自从他出国）.（go）

25. （对你没什么差别）whether I like it or not，because you never listen t o me.（make）

26. （用不了多久）before we know the result of the experiment.（be）

27. Measures have been taken to solve the problem，but （可能要过段时间）b efore the situation improves.（some）

28. （没关系）the weather was bad.（matter）

29. （是否要紧）whether we go together or separately?（matter）

30. （我突然想起）that he might have forgotten our date.（occur）

21. It will take her a long time 22. have seen the film 23. had been to the Great wall

24. since he went abroad 25. It makes no difference to you 26. It won’t be long

27. it may be some time 28. It didn’t matter that 29. Does it matter

30. It occurred to me

31. （可能性不大）he will change his mind.（chance）

32. （很可能）we will go to Beijing.（chance）

33. （似乎有）hundreds of people in the field；it was quite full.（seem）

34. 曾经有）a church at the corner of the street.（be）

35. She （阐明清楚）she had nothing to do with the decision.（make）

36. I （确定）everything is ready.（see）

37. What a pity my new computer doesn’t work.（一定有什么问题）with it.（wrong）

38. （结果）she was a friend of my sister.（turn）

39. Come and see me when （你方便的时候）.（convenient）

40. （没多大意义）complaining . It doesn’t make difference.（point）

31.There is little chance that

32. There is a good/high chance that/There are chances that/Chances are that 33. There seeme

d to b

e 34. There used to be

35. made it clear that 36. will see (to it) that

37. There must be something wrong 38. It turned out that

39. i t’s convenient to/for you 40. There is not much point (in)

It用法练习题及答案

It的用法 一．单项选择 1.It was at the gate ____ he told me the news. A. that B. what C. which D. when 2.Is ____necessary to tell his father everything A. it B. that C. what D. he 3.Was it in this palace ____ the last emperor died? A. that B. in which C. in where D. which 4.Is ____ possible to fly to the moon in a spaceship? A. now B. man C. that D. it 5.Was it during the Second World War ____he died? A. that B. while C. in which D. then 6.Is ____necessary to complete the design before National Day? A. this B. that C. it D. he 7.I don't think ____possible to master a foreign language without much memory work. A. this B. that C. its D. it 8.Does ____matter if he can't finish the job on time? A. this B. that C. he D. it 9.It was not ____she took off her dark glasses ____ ,I realized she was a famous film star. A. when; that B. until; that C. until; when D. when; then 10.Tom‘s mother kept telling him that he should work harder, but ____didn’t help. A. he B. which C. she D. it 11.____is a fact that English is being accepted as an international language. A. There B. This C. That D. It 12. Is ________ possible to fly to the moon in a spaceship? A．now B．man C．that D．it 13．Our food and service are better than ________ used to be. A．it B．we C．they D．them 14．________ appears to me ________ the report must be truth. A．That; it B．It; that C．It; it D．That; that 15．He feels ________ duty to help others. A．that he B．that his C．it he D．it his 16．Take ________ easy. The roads are icy. A．it B．them C．us D．you 17．The TV sets made in China are much better than ________ in Japan. A．that B．those C．them D．It 18．—— Have you found the bike you lost yesterday? ——Yes, I've found ________ already. A．it B．that C．the one D．that one 19.——I'm looking for a flat.

It作形式主语常见用法

It作形式主语常见句型 1.It + be +形容词+ that-从句 可用于此句型的形容词有: wonderful, true，good，right，wrong，（un）important，useless，surprising，disturbing,frightening,alarming,clear，unusual，lucky，certain, necessary等。如： ①It is quite certain that he will be at the meeting.他将出席会议是无疑的。 ②It is surprising that he came late to school this morning.他今天早上迟到真令人惊讶。 ③It is important that we (should) study hard.我们努力学习是很重要的。 注意: 该句型中的形容词是（un）important, necessary等时，从句应为(should )+动词原形。 It is important that we (should) learn English well. It is necessary that he (should) rember these words. 2.It + be +名词+ that-从句 适用该句型的名词（词组）有: a pity，an honor，a good thing，a fact，a surprise，a question,a shame,a custom, a truth,our hope, no wonder, good/bad manners等。如： ①It is a pity (that) you missed the sports meeting last week.你错过了上周的运动会太可惜了。 ②It is a fact that Engl ish is being accepted as an international language.事实上英语已经被作为一种国际语言而接受了。

(完整版)初中it用法练习题

---------------------------------------------------------------最新资料推荐------------------------------------------------------ 初中it用法练习题 初中 it 用法练习题在英语中,it 有许多不同的用法,它既可以用作代词，也可以用作引导词，还可以用来构成强调句型。 1. it 用作代词用作人称代词在句子中作主语或宾语；指前面已经提到过的事物、动物或人，且 it 指特定的事物；如果指前文中提到的事物中的任何一个，用 one。 one 可以与 any, each, every, not 等连用，但 one 不可代替不可数名词。 Wheres your car? Its in the garage. 你的汽车在哪儿呢？在车库里。 Did you hit it? 你打中了吗？ The baby cried when it was hungry.这婴儿饿时就哭。 Who is that? Its me. 是谁？我。 Whats this? Its a box. 这是什么？一只箱子。 作非人称代词表示天气、日期、时间、温度、距离、价值、路程、度量、自然现象与环境等。 也可模糊地指一般情形或上文的部分或整个意思。 译成汉语时，it 通常不一定译出来。 Its a long time since they left. 他们走后很久了。 Its two miles to the beach.离海滨有两英里远。 Thats just itI cant work when youre making so much 1/ 24

It用法练习题及答案

It的用法 一．单项选择 was at the gate ____ he told me the news. A. that B. what C. which D. when ____necessary to tell his father everything A. it B. that C. what D. he it in this palace ____ the last emperor died? A. that B. in which C. in where D. which ____ possible to fly to the moon in a spaceship? A. now B. man C. that D. it it during the Second World War ____he died? A. that B. while C. in which D. then ____necessary to complete the design before National Day? A. this B. that C. it D. he don't think ____possible to master a foreign language without much memory work. A. this B. that C. its D. it ____matter if he can't finish the job on time? A. this B. that C. he D. it was not ____she took off her dark glasses ____ ,I realized she was a famous film star. A. when; that B. until; that C. until; when D. when; then ‘s mother kept telling him that he should work harder, but ____didn’t help. A. he B. which C. she D. it a fact that English is being accepted as an international language. A. There B. This C. That D. It 12. Is ________ possible to fly to the moon in a spaceship? A．now B．man C．that D．it 13．Our food and service are better than ________ used to be. A．it B．we C．they D．them 14．________ appears to me ________ the report must be truth. A．That; it B．It; that C．It; it D．That; that 15．He feels ________ duty to help others. A．that he B．that his C．it he D．it his 16．Take ________ easy. The roads are icy. A．it B．them C．us D．you 17．The TV sets made in China are much better than ________ in Japan. A．that B．those C．them D．It 18．—— Have you found the bike you lost yesterday? —— Yes, I've found ________ already. A．it B．that C．the one D．that one 19.—— I'm looking for a flat.

高中英语巩固练习 it的用法

巩固练习 Ⅰ. 把下面句子译成英语： 1. 他们记住这些词很有必要。 ____________________________________________________ 2. 据报道，另一颗卫星（satellite）已经被送入轨道（orbit）。 ____________________________________________________ 3. 有人建议推迟这次会议。 ____________________________________________________ 4. 这种事竟然发生在你们班上，真是遗憾！ ____________________________________________________ 5. 你这样说真是太好心了。 ____________________________________________________ 6. 他们发现他们在两天内完成工作很难。 ____________________________________________________ 7. 我儿子给我打电话时已经近中午了。 ____________________________________________________ 8. 到城中心要步行半小时。 ____________________________________________________ Ⅱ.读下面短文，说说其中的it是什么用法。 It (1) was a sunny Sunday. Peter decided to go for a walk to the park, though it (2) was two miles away. It (3) was so fortable to walk on the street. Suddenly it (4) began to rain. He found it (5) hard to walk there. Then he took a bus home. Unfortunately it (6) went wrong. When he got home, he was wet through. Thus it (7) was a day that he would never forget. Ⅲ. 单项选择。 1. _______ worries me the way he keeps changing his mind. A．This B．That C．What D．It 2. I’d appreciate _________ if you would like to teach me how to use the puter. A. that B. it C. this D. you 3. I like this house with a beautiful garden in front, but I don’t have enough money to buy _______. A. one B. it C. this D. that 4. It’s the first time that he has been to Australia, ________? A. isn’t he B. hasn’t he C. isn’t it D. hasn’t it 5. ---Have you heard the latest news about Tom? ---No, what _________?

it用法及句型归纳

it用法及句型归纳 it为人称代词，主格与宾格同形。该词用法灵活，下面帮助同学们作以归纳。 一、可用来代替指示代词this或that。例如： —What's this/that? 这/那是什么？ —It's a ruler. 这/那是尺子。 二、表示时间、距离、天气、数字等。例如： 1. —What's the time?几点了？ —It's ten to ten. 九点五十。 2. —What's one plus two? 一加二等于几？ —It's three. 等于三。 三、用来代替前面提到的人或物。例如： This is my pen. Give it to me, please. 这是我的钢笔，请把它给我。 四、指心目中或上下文中所指的人或物。例如： 1. —Who's that over there? 那边的人是谁？ —Is it Bill? 是比尔吗？ 2. Miss Gao has a computer. It's new. 高老师有一台电脑，它是新的。 五、指身份不明、性别不详的人或者指照片中的人。例如： —What's the baby in the picture?照片中的那个婴儿是谁？ —It's me. 是我。 六、在电话用语中，可用it来指代对方或者自己。例如： —Hello! Who's it? 喂，你是哪位？ —It's Jim. 我是吉姆。

在初中英语教材中，出现了许多由it引导的固定句式，现归纳如下： 一、It's time for sb. to do sth. / It's time for sth.意为"是(某人)该干……的时间了"、"到……的时候了"。例如： 1. It's time for supper ／to have supper.该吃晚饭了。 2. It's time for me to study.我该学习了。 二、It takes(sb.)some time to do sth.意为"(某人)花……时间做某事"。例如： 1. It takes twenty minutes to go to school by bike. 骑自行车上学要花二十分钟的时间。 2. It took me a week to finish reading the book. 我花了一周时间读完这本书。 三、It is one's turn to do sth.意为"轮到某人做某事了"。例如： It's your turn to be on duty tomorrow. 明天轮到你值日了。 四、It is ／has been ＋时间段＋since ＋一般过去时，意为"自从……以来已过了……(时间)。" 例如： 1. It is / has been four days since I caught a cold. 我感冒已四天了。 2. It is / has been two weeks since we met last. 自从我们上次见面以来已过了两周。 五、It seems ／seemed ＋that从句，意为"看起来好像……"。例如： It seemed that our team was going to win. 我们队看起来好像要赢了。 六、It's＋表语＋to do sth.。例如： It's a good idea to go out for a walk. 出去散步是个好主意。 七、It's ＋adj.＋that从句。例如： It's true that I may fall behind the other students.我真可能落在别的学生后面。 八、It's＋adj.＋of(for)sb.＋to do sth.。对于这个句型究竟用of还是用for，主要取决于前面的形容词。如果形容词是描述不定式行为者的性格、品质等的，如kind，good，nice，clever 等用of；如果形容词仅仅是描述行为的则用for，这类形容词常见的有difficult，easy，hard，important，dangerous等。例如：

it用法专项练习题

it用法专练 一．替代词it, that, (the) one(s), those的用法辨析 1. The award on the left is more beautiful than _______ on the right. A the one B one C it D this 2. Few pleasures can equal ________of a cool drink on a hot day. A. some B. any C. that D. those 3. The hunter’s younger sister is taller than the elder ___. A the one B one C that D this 4. I need the plastic bags, not the paper______ . A the one B ones C that D this 5. The TV sets made in China are much better than ________ in Japan. A．that B．those C．them D．It 6. Listen to________! We will have three days off. A the one B ones C that D this 7. “A penny saved is a penny earned.” Who said_________? A the one B ones C that D this 8. I bought a dictionary three years ago and I am still using______ now. A one B ones C it D this 9. I bought a dictionary three years ago but I am going to buy a new _______soon. A one B ones C it D this 10. I was disappointed with the film. I had expected____ to be much better. A.that B. this C. one D .it 11 Equipped with modern facilities, today's libraries differ greatly from______. A. those of the past B. the past C. which of the past D. these past 12.My most famous relative of all, ___who really left his mark on America,wasReb Sussel,my great-grandfather. A. one B. the one C. he D. someone 13. He has one blue pen and two red ________. A. one B. those C. one's D. ones 14. Cars do cause us some health problems —in fact far more serious than_____ mobile phones do. A. one B. ones C. it D. those 15. Cook was a strict but good captain, ______ who took good care of the sailors on his ship. A. that B. one C. it D. what 16. Mr Zhang gave the text books to all the pupils except____who had already taken them. A.these B.ones C.the ones D.the others 17. —— I'm looking for a flat. —— Would you like ____ with ____ garden? A．it; the B．it; a C．one; a D．one; the 18.Meeting my uncle after all these years was an unforgettable moment, ___I will always treasure. A.that B.one C.it D.what 19. The style of the building is similar to _________of a temple. A.that B.one C.it D.what 20. The computers in our school are connected to the Internet while___in their school aren’t. A.that B.one C.it D.those 21.Our food and service are better than ________ used to be. A．it B．that C．they D．those 22.I’m moving to the countryside because the air there is much fresher than _____ in the city. A. ones B. one C. that D. those 23.We’ve been looking at houses but haven’t found _____we like yet.

选修6It的用法语法练习题及答案

It的用法 It的用法在高考中也是重现率较高的语言点，尤其是it用于强调句。其考查方式多通过“单项填空”进行，偶尔也出现在“短文改错”和“完形填空”中。 1．(NMET98) It was only when I reread his poems recently ___ I began to appreciate their beauty．A．until B．that C．then D．so 正确答案：B 此题考查强调句，所以用that。 2．(NMET98) I hate____when people talk with their mouths full． A．it B．that C．these D．them 正确答案：A 此题考查it作形式宾语的用法，所以选A。 3．(MET91，短文改错)David and I did not agree and David pointed to a path which he thought it would probably lead to a village． 正确答案：去掉it，因为定语从句中已有宾语which。 一、要点点拔 1．代替上文中提到过的人或事物。指代人时，一般用于小孩或身份不十分明朗的人。 1) －Who is the baby? －It‘s my teacher’s son． 2) －Who is that gentleman? －It's my friend Tom．He(不可用It) wants to see you． 2．用于表达天气、环境、时间、距离、季节等。例如： 1) It’s half an hour’s walk from here to our school． 2) It‘s nice and warm here． 3) But it's two o'clock now, and it's time for us to go to school． 3．用作形式主语.it 没有具体意义，而只是帮助把真正的主语移至句子后尾，使句子显得平稳一些，能借it 给移至句子后尾的主语有三种：一种由不定式表示，一种由动名词表示，一种由从句表示。 1).It 替代真正的主语——动词不定式短语. It is easier to say than to do . It is a good act to help the others. 2).it 替代真正的主语——动名词短语,以动名词短语做主语的句子，主要在以no good, no use, no harm, dangerous, foolish 等词作表语的句中. It’s no harm drinking running water in that area。 It’s foolish talking like that. 3).it 替代从句作主语，用从句做主语的带it 的句子很多,常见的有下面几类： ①It is a pity (a shame ,a fact ,a wonder ,a good thing,etc. )that… It is a shame that he didn’t pass the exam. ②It is strange ( surprising,obvious ,true, good,possible,clear,etc. ) that…。 It was clear that they had no desire for peace. ③It seems (happened ,turned out,etc.)that… It seemed that things were not as they expected. ④It is said ( decided ,expected ,etc)that … It is said that the tickets have been sold out . 4.用作形式宾语。

-it的用法及强调句型(精心整理)

it的用法及强调句型 it的用法 一、it作指示代词【完成句子】用one，ones，it，that，those填空 (1) — I can't find my watch. —You haven't found ______？If you want to buy a new ______，I suggest you buy ______ made in China. (2) We've got a big cup and two small ______. (3) The weight of an elephant is much greater than ______ of a tiger. (4) The books on the first shelf are easier than ______ on the second shelf. (5) The boy told his story and ______ of the girl upstairs. 【答案】(1) it; one; one (2) ones(3) that (4) those / the ones (5) that / the one 【结论1】 ①指代上文提过的事物时，it指的是同名同物，相当于the＋名词； ②one指的是同名异物，表示单数可数名词相当于a ＋名词；a / an＋形容词＋one等于a / an＋形容词＋名词；复数形式用ones； ③that后面常有后置定语，有特指意义，代替不可数名词或单数可数名词，相当于the＋ 名词； ④复数名词用those，相当于the ones。 【例句观察】— Someone is knocking at the door. Who is it? — It must be Leo. He said he'd come to see me. 【结论2】it指代人时，常指小孩或身份不明的人。 【例句观察】It's too quiet in the room. Everyone just keeps silent. 【结论2】it可用以指代环境或情况。 (6)— What time is it now? — It's half past seven. (7)— It is spring now and it's warm these days. 【结论3】it可用以指代时间、季节、天气或距离。 【注意】it指代时间时，有如下一些句型： (1) It is time for sth. (for sb.)to do sth. / that－从句(should do / did, 必须用虚拟语气) 例：① It's time for lunch. ② It's time for us to clean the house. ③ It's time that we should clean the house. ＝It's time that we cleaned the house. (2) It is / has been ＋some time ＋since－从句(从句用一般过去时) It is 10 years since I graduated from college. (3) It / This/That is the first / second time that－从句(必须使用现在完成时)这是某人 第……次做了某事。 It / This/That was the first / second time that－从句(必须使用过去完成时) 例：①It is the second time that she has visited the Great Wall. ②This was the first time that I had come late to school. (4) It was ＋时间点＋when －从句 例：It was evening when we got home. ＝It was evening in which we got home. (5) It was / will be ＋some time ＋before －从句 例：①过了5年他们才从北大毕业。 It was five years before they finally graduated from Beijing University. ②不久，我们就要从我们学校毕业了。 It won't be long before we graduate from our school. 二、it作形式主语 1.代替主语从句 ①It is clear ( obvious，true，possible certain....) that ..... “清楚（显然，真的，肯定．．．）” ②. It is important ( necessary，right，strange，natural...) that ... that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去，建议记住该句型中的形容词。 It is important that we (should) learn English well.

(完整版)it的用法练习题

it的用法练习题（一） 1.It took us over an hour _____________along the street. A. walk B. to walk C. walking D. walked 2.I think it a great honor ________to visit your country. A. to invite B. inviting C. having invited D. to be invited 3.Many people now make_____________ a rule to buy cards for their friends before Christmas. A. themselves B. it C. that D. this 4._____is very clear to everyone that he's round and tall like a tree. A. This B. What C. That D. It 5.In the United States, bus travel doesn't cost much as train travel,_____________? A. don't they B. does it C. do they D. doesn't it 6.Someone is at the door, who is_____________? A. this B. that C .it D. he 7.—It is raining cats and dogs. —_____________ . A. So it is B. So is it C. Neither it is D. Neither is it 8.—My home is in that tall building over there. —_______________? A. Can it see B. Can see it C. Can be seen it D. Can it be seen 9. _____________raining hard for 3 hours without stopping. A. It is B. It was C. It has been D. It had been 10.—Has the boy got his bicycle now? —Yes, the police gave_____________. A. him to him B. it to it C. it to him D. him to it 11.—Boy, —It is, looks like spring is coming soon.

it做形式主语用法大全含练习与答案

It作形式主语常见句型 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 on foot.

It的用法、Therebe句型

期末专题练习——It的用法、There be句型 ［教学内容］ 第一部分It 的用法 概说：It是个非常简单的单词,但其用法却很灵活。 一、指代作用。It作句子的主语。 （一）It指前面已经提到过的人或事物。 1. What’s this? —It’s a chair. 2. Who is it? —It’s me. 提示：it代替上文提及的原物(复数用they)； one指代上文提及的、泛指的可数名词单数（复数ones）； that指代上文提及的定指的可数名词单数或不可数名词（复数those）。 （二）It指时间、季节。虚义。 1. What time is it? —It’s nine. 2. It’s time to go to school. Let’s go. 3. What day is today? —It’s Saturday. 4. What is the date today? —It is Oct. 1st. 5. What season is it? —It is summer. （三）It指气候。虚义。 1. It is cold in this room. 这个房间很冷。 2. What’s the weather like today? —It’s fine. 今天天气怎么样？天气很好。 3. It often snows in winter in Harbin. 哈尔滨的冬天经常下雪。 （四）It指距离、情况等。虚义。 1. It is five kilometers from my home to the school. 从我家到学校有五千米。 2. It is very near from this shop to that. 从这个商店到那个商店很近。 3. It is a long way to the sea. 这离海很远。 4. Is it well with you? 你身体好吗？ 二、It作形式主语。 动词不定式、动名词短语、从句在整个句中起主语作用，而这一部分用词较多，因此