九年级it用法及练习.docx

It的用法总结
在英语中3有许多不同的用法，它既可以用作代词伽人称代词、非人称代词)，也可以用 作引导词(作形式主语或形式宾语)，还可以用来构成强调句型。
1. 讥用作代词
(1) 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 讥指特定的事物；如果指前文中提到的事物中的任何一个，用。neoone可以与any, each, every, not等连用，但。ne不可代替不可数名词。
—Where’s your car?
— Its in the garag你的汽车在哪儿呢？在车库里。指代物品your car)
Did you hit i你打中了吗？(指代事件)
The baby cried when it was hUig戮儿饿时就哭。(指代婴儿，尤指性别不详或无所谓 时)
—Who is that?
— Its me,是谁？我。指一定情景中所确定的人或事物，此时相当于指示代词，代指this 和that有时也指人)
—What’s this?
— Its a box,这是什么？ 一只箱子。
(2) 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，i通常不一定 译出来。
Its a long time since they他们琏.后很久 了。
Its two miles to the bj离海滨有两英里远。
Thafs just—it caht work when ydure making so much noi原因就在这里你弄出
这么大的声音，我工作不了。
另外，需要注意两点：
(1) Its time.”后面可以接不定式和介词短语表示“是做……的时候了”。如：
Its time for supperIts time to have supper.
(2) Its time..”后面还可以接一个从句，但是从句中的谓语动词一定要用过去式即虚 拟语气，如：
Its time we had lun是我们吃饭的时候了。
Its time we star是ed,们该出发的时候了。
2. it用作引导词
(1)作形式主语由动词不定式、动词-ing短语或名词性从句担任主语的句子，常用it 来作形式主语，而把真正的主语放在句子的后面。
Its not easy for us to learn Engli句型为l:l.I t[ +b形+容词+ ( for s).to do sth.]
Its foolish of you to say that 句型 her. I[ +bj§+容词+ ( of sb) +to do sth.]
Its no use/good/h.lpleeping too mucl句型为：It +b^+词+doing)
Its important that we be there on 句型为：It +be形+容 词+thatM 句)
Its high time that Tom went to sc句型为：(It +be +time +从句，从句中的动词用 过去时)
It was the second time that he had telephoned me句hl为day. [be+ the first(second, third)time +t从句] ( that从句中动词用完成时)
It was arranged that they should leave the followin型 winter.+(过去分词+that
从句）
It appears that the two leaders are holding s句爨为：taM不+及物动词+that从 句）
（2）作形式宾语 当宾语是动词不定式、动词-让8短语或名词性从句时，而宾语后又有 宾语补足语，则需用it作形式宾语，将真正的宾语放到宾语补足语的后面。用于这种结构 的动词有：feel, find, think, make, consider, take
Marx f ound i t importantsttudy the s i tuation in马克思发现研究俄国的形势很重 要。
I find it strange that she Wantsnto tra她竟不想旅游，我觉得很奇怪。
I’ 11 make i t clear to you that failure is the moth我要告诉你们失败是成功之 母。
3. 讥用在强调句型中
英语中，为了突出句子中的某一成分，达到强调或使人特别注意该成分的目的，人们常 用“It is/wa强调对象+who/whom/that....”句式把整个句子分割成前后两个部分，使之各自 有自己的谓语动词，中间由that或 who/whom连起来成为一个新句子。除强调人时用who, whom夕卜，其余情况都用连词that被强调的对象仅限于句子的主语、宾语、宾语补足语和 部分状语（包括状语从句），即除谓语和定语以外的句子成分。这部分状语主要包括地点状 语、由 before, when, after, not等uH起&的时间状语从句、由 because, because 引起的原 因状语、由by引起的方式状语等。
当被强调的对象是人时，可用who, whom或that其余情况一律用that；当被强调对象 在从句中做主语时用who/that^被强调对象在从句中做宾语时用whom/that
原句：My father did the experiment in the lab yesterdt^天晚上|我^父亲在实验室 做实验。
It was my father did the experiment in the lab yeste 昨天晚上是我父亲在实验 室做实验。（强调主语）
It was the experiment that my father did in the lab yestlfeda 晚上我父亲.在实 验室里做的是实验。（强调宾语）
It was yesterday evening that my father did the experime我t父iik 是昨 天晚上在 实验室做实验的。（强调时间状语）
It was in the lab that my father did the experiment yest我父i 亲昨天晚上是在 实验室里做这个实验的。（强调地点状语）
另外，再注意两点：
（1）强调句如果还原成陈述句的话，句子成分是完整的，如果不完整，那必然是别的 从句而不是强调句。
It was the town where we lived for thrive句^是定语.从句，因为还原以后的句子为：
We lived the town for three 缺e少介.词 （in the to）n, 而 It was in the town that we lived for three y这就是一个强调句了。
（2）强调中心也可以是疑问词，这时要将疑问词置于句首，构成一个特殊疑问句。
Why is it that you want to leave s你到o廊为何这么早就要走？
^用法练习题(1)
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 nowB manC thatD 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
答案：1-5 AAADA 6-10 CDDBD 11 D
^用法练习题（2）
一、填空题
1. I li in the autumn when the weather is clear and bright. B. thatC. it
D. one
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
3. The Parkers bought a new house but will need a lot of work before they can move in.
A.they B. itC.oneD. which
4. Someone is ringingthe doorbell. Goand see
A.who is he B.whohe isC. who is it D.who it is
5. In fa is a hard job for the police to keep order in an important football match.
A.this B. thatC.thereD. It 6.Mfkemother kept telling him that he should work
hard, bu didnt help.
A.heB.it C. she D. which7.Since youhaverepairedmycomputer,isno
need for meto buy anew one.
A.it B. thereC.thisD. that
8.Theofficial madeclear that he would doeverything possibletosolvetheproblem.
A.itB.this C.that D. him9.Do youli here?
Oh, yes, the air, the weather and the way of life. Everything is so nice.
A. this B. there C. that D. it10. Bslhim is to inf orm the viewers that cigarette advertising in TV is illegal,? A. istt it B. is it C. is’it he D. is he
11. is mentioned above, the number of the students in senior high school is increasing.
A. which B. As C. That D. It
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
13. It wa back home after the experiment.
A. not until midnight did he go B. until midnight that het （gcdn
C. not untilmidnightthathe wentD. untilmidnightwhen he didrit go14. 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
15. It is the ability to do the m^bters not where you come from or what you are.
A. one B. that C. what D. it
二、填空题
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.（report）
3. （毫无疑问）he will be admitted to the key university.（doubt）
4. He has made some great mov （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）
11. It’s no （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 means.（certain）
15. （据说）the professor has already succeeded in carrying out this experiment.（say）
16. The professor i （已成功）in carrying out this experiment.（succeed） （比较句型15）
17. （感到遗憾）I haven’t been to Hte）ggettier.（pity）
18 （使之成为一种惯例）that I get up at six every day in the morning.（rule）
19. I （认为有必要）to take plenty of hot water every day.（think）
20. It’s high time t （采取措施）to stop pollution.（take）
21. （要花费她很长时间）to recover from the illness.（take）
22. This/It is the third ti（看那部电影）.（see）
23. It was the first time（至U长城）.（be）
24. It is / has been tw （自从他出国）.（go）
25. （对你没什么差别）whether I like it obenotse you never listen to me.
（make ）
26. （用不了多久）before we know the result of the expeTbment.
27. Measures have been taken to solve the,pbub （可能要过段时间） before the situation imprbveme ）
28. （没关系）the weather was b（dmatte）
29. （是否要紧）whether we go together or separateltte）
30. （我突然想起）that he might have forgotten oufodcur）
31. （可能性不大）he will change his m（nihance）
32. （很可能）we will go to Beijlngiance）
33. （似乎有）hundreds of people in the fiiteMis quite fhllem）
34. （曾经有）a church at the corner of th（ betieet.
35. She （阐明清楚）she had nothing to do with the de（cmske»r）.
36. I （确定）everything is rea（dyee）
37. What a pity my new computer doesn’ t（一定有什么问题）with it. （wrong）
38. （结果）she was a friend of my slstte）
39. Come and see me whe （你方便的时候）.（convenient
40. （没多大意义）complaining . Ifesaho t make differebpeint）
练习题(2)答案：
一. 选择题
1. 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.i可用 于某些动词(hate, appreciate和介词之后作笼统宾语.
2. 解析］A.第一空用that指代上文提到的事情；第二空用讥指代第一空的that
3解析］B此处讥指代前面出现的a new house.讥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解析］D此处讥用作人称代词，指不明身份，性别的人;宾语从句应用陈述语序.
5解析］D此处讥用作形式主语.
6解析］B此处讥用以指代前面的句子，可用that替换.
7解析］B 考查固定句型 There is no need for sb to do sth
8解析］A此处 讥用作形式宾语.
9解析］D此处it泛指自然环境.
10解析］A主语为“Bil* ain”
11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”；a则位置灵活，译为正如”.
12解析］D考查强调句型.
13解析］C考查not unti结构强调句型.
14解析］A考查强调句型的特殊疑问句句式.
15 ［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 ability to do the为oj平衡结构,部分移至句尾
二、填空题
I. It’s reported l2halAs is reported. Tlere is no doubt that 4. There is no doubt about i t
5. There is no need 6. It happened that It seems that 8. It looks as if It’s likely that 10.It’s possible for me
II. crying over spilt milk 12. Ifs/There is no use complaining. It’s no wonder that
14. It’s certain tha5. It’s saidthht. to have succeeded 17. I feel it a pity that
18. I have made it a rule 19. think it (is) necessary 20. took/should take measures
21. It will take her a long t2me have seen the fil2ri3. had been to the Greatwall
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 tome
31. Thereis littlchance that32. There isa good/highchance that/Therare
chances that/Chances are that33. There seemed to be 34. There used to be
35. made it clear that36. will see (to it)that
37. There must be something wrong38. It turned out that
39. it’s convenient to/for you40. There is not much point (in)