语法填空—特殊句式
高考英语 必考点 专题15 特殊句式(高效演练)(含解析)

专题15 特殊句式——高效演练一.单句语法填空1.____________ seems to be intense competition among students to enter a key university.【解析】:句意:学生们进入重点大学的竞争似乎很激烈。
考查there be句型。
there be句型中的be有时可用seem to be等替换。
【答案】:There2.After the major earthquake he was surprised at ____________ hungry people were for mental and emotional help.【解析】:句意:大地震之后,他惊讶于人们那么迫切地需要精神和情绪上的帮助。
本题介词at后接宾语从句,且宾语从句为感叹句,how后接形容词hungry;短语be hungry for意为“对......渴望/渴求”。
【答案】:how3.Not until recently they encourage the development of tourist-related activities in the rural areas.【答案】:did【解析】根据时间状语"recently"及动词encourage可知本句应用一般过去时。
"Not until+状语"位于句首时,句子采用部分倒装。
故填助动词did。
4.If (accept)for the job, you’ll be informed soon.【答案】accepted【解析】句意:如果你被录用做这份工作的话,你会很快收到通知的。
当状语从句的主语和主句的主语一致且从句谓语部分有be动词时,状语从句的主语和be动词可以省略。
该题中的条件状语从句补充完整为If you are accepted for the job。
09.特殊句式-高考英语一轮复习语法知识

(2)“only+状语”置于句首时, 主句要进行部分倒装。 Only then did we realize there was an earthquake. I was too frightened to move. 只有在那时我们才意识到发生了地震。我太害怕了以至于无法动弹。 Only after talking to two students did I discover that having strong motivation is one of the biggest factors in reaching goals. 只有在和两个学生交谈之后我才发觉拥有强烈的动机是达到目标的最大因素之 一。
(3)so/such...that...结构中的so/such连同它所修饰的成分共同位于句首表示强调 时,主句要用部分倒装结构。 So touching did the song sound that I couldn’t hold my tears back when I heard it for the first time.这首歌听起来如此令人感动以至于我第一次听到它时就忍不住 流下眼泪。 (4)表示前面所说的情况也适用于后者时,用倒装结构“so/neither/nor+助动词/系 动词/情态动词+主语”(so表示肯定意义, neither/nor表示否定意义)。 None of us were familiar with planting, and nor did we know how to use gardening tools. 我们都不熟悉种植,也不知道如何使用园艺工具。 Tom can speak French. So can Jack.
考点4 强调的两种形式 1.强调句型 (1)强调句型的基本结构: It is/was+被强调的部分+that+句子其他部分.。该句型 可对句子的主语、表语、宾语、同位语、状语等进行强调。当强调部分是人, 且作主语时, 引导词也可用who。 But it was the effects deep within the fat cells that may have been the most significant, the researchers found. 但研究人员发现,最重要的可能是脂肪细胞内部的影响。 【特别提示】强调主语时要注意连接词与谓语的一致性。 It is our teacher that/who helps us make great progress.
2020届 二轮复习短文语法填空分类解题指导之十一:特殊句式

2020届二轮复习短文语法填空分类解题指导之十一:特殊句式明备考方向攻重点难点1.强调句型基本结构(1)强调句型基本结构为“It+is/was+被强调部分+that/who +句子其他部分”(2)借助于助动词do/does/did对谓语动词进行强调。
It is with your generous help that I firmly believe that I will adapt to the college life as soon as possible.在你慷慨的帮助下,我认为我会很快地适应大学生活的。
I do hope you can make great progress in your Chinese learning study. Looking forward to your early reply.我真的希望你能在中文学习上取得很大的进步。
期待您的早日回复。
2.与含状语从句的主从复合句的区别(1)与“It is/was+时间名词+when ...”的区别“It is/was+时间名词+when ...”句型中,it指时间,when 引导的是时间状语从句。
时间名词前无介词。
It was 6 o'clock when I got up today.(主从复合句)今天我起床时已经6点了。
It was at 6 o'clock that I got up today.(强调句型)今天我是6点起的床。
(2)与“It is/was+时间段+since ...”的区别It is two years since I taught English.我不教英语两年了。
It is two years since I began to teach English.我教英语已经两年了。
It is two hours that he spends on English every day.他每天花两个小时学英语。
语法填空特殊句式

语法填空特殊句式语法填空特殊句式Pleasure Group Office【T985AB-B866SYT-B182C-BS682T-STT18】语法填空之特殊句式和固定搭配专题一特殊句式考点1. 强调句强调句型的基本结构为:It is/was+被强调部分+that/who...使用强调句型的几个注意事项:(1)被强调成分是主语,who/that之后的谓语动词应该在人称和数上与原句中的主语保持一致。
It is I who am right. 对的是我。
It is he who is wrong.错的是他。
It is the students who are lovely.可爱的是学生们。
(2)被强调成分即使是在句子中作时间状语、地点状语、原因状语等,也不能用when, where, because,而要用that。
It was in front of the bank that the lady was robbed.那位女士是在银行前面遭遇抢劫的。
It was because of the heavy rain that he came late.他是因为下大雨来晚的。
(3)被强调成分是作主语的代词时用主格,是作宾语的代词时用宾格。
It was he that helped me yesterday.昨天是他帮助了我。
It was me that he helped yesterday. 他昨天帮助的是我。
(4)被强调部分既包括人又包括物,用that不用who。
It was the things and people that they remembered that they were talking about.他们谈论的是他们记得的人和事。
注意:助动词do, does, did用在动词原形前,用来对谓语动词进行强调。
. Do come here tomorrow.. He does study hard.【易混易错】强调句型与主语从句、状语从句、定语从句的区别1.强调句型与主语从句的比较强调句型将句子中的it is/was与that/who同时省去,句子仍然成立;而包含主语从句的句子用that从句代替it,句子成立。
特殊句式与主谓一致

5 . ______________________ , he is always thinking of others.他虽然是个孩子,但他总是替别人着想。
[答案] Child as he is
考向一
倒装句
(2014· 全国大纲卷改编)Not only__________the nurses want a pay increase, they want reduced hours as well.
[答案] can you succeed
3 . Seldom in my life ______________________such a determined man.我一生很少遇到这么有决心的人。
[答案] have I met
4.______________________, I would do the work better. 我要是你,我会把工作做得更好。
Had it been possible, I would have joined you to help them. 如果可能的话,我会和你一起帮助他们。(相当于 If it had been possible) Should there be a flood, what could we do?如果发生洪灾, 我们该怎么办?(相当于 If there should be a flood)
[答案]
that
4.__________was not until I came here that I realized this place was famous for not only its beauty but also its weather.
[答案] It
高中英语语法——特殊句式(省略、倒装、强调)巩固练习

特殊句式巩固练习I.单句语法填空1.Film has a much shorter history, especially when (compare) to such art forms as music and painting.2.Her parents wouldn’t allow her to go to the party, but she still hopes .3.(make) good use of learning resources such as the website and library, and you will make great progress.4. You can’t imagine difficulty we had walking home in the snowstorm.5. No sooner Mo Yan stepped on the stage than the audience broke into thunderous applause.6. Only with the greatest of luck she manage to escape from the rising flood water last year.7. Present at the party last night (be) Mr Green and many other guests.8. The moment the bell rang, out (rush) the children.9. he caught the morning train, he would not have been late for the meeting.10. Not I caught sight of my teacher in the crowd did I calm down.11. It was the culture, rather than the language, made it hard for him to adapt to the new environment abroad.12. Was because Jack came late for school that Mr Smith got angry?13. It was not until I went there I began to know something about the matter.14.—Why was it you were so angry?—Because we failed to take part in the basketball match.15.Scientists say it may be five or six years it is possible to test this medicine on patients.II.根据要求改写下列句子。
高考必考语精讲精练专题十四:特殊句式 Word版含解析
高考必考语法精讲精练语法专题十四:特殊句式Ⅰ.强调句一.强调句的基本形式1、强调句的陈述句形式:It is/ was +被强调部分+ that/ who+其它部分。
注意:被强调部分通常是主语、宾语或状语;强调主语且指人的时候可以用who,其他一律用that。
例如:Hemetan old friendin the parkyesterday.主语谓语宾语地点状语时间状语对句中各部分进行强调:(1)强调主语:It was he who/that met an old friend in the park yesterday.(2)强调宾语:It was an old friend that he met in the park yesterday.(3)强调地点状语:It was in the park that he met an old friend yesterday.(4)强调时间状语:It was yesterday that he met an old friend in the park.2、强调句的一般疑问句形式:Is / was it+被强调部分+that/who+其他部分?①Was it he who/that met an old friend in the park yesterday?②Was it an old friend that he met in the park yesterday?③Was it in the park that he met an old friend yesterday?④Was it yesterday that he met an old friend in the park?3、强调句的特殊疑问句形式:特殊疑问词+ is/ was + it + that + 其它部分?①What is it that you want me to do?②Who was it that broke the window?③Where was it that you put your English book?④When was it that he made up his mind to take this course?⑤Why is it that he doesn't like the book?⑥How was it that he got hurt?注意:(1)强调主语时,谓语动词和主语在人称和数上要保持一致。
高考英语语法特殊句式专题讲解练习含答案
完全倒装谓语动词完全放在主语之前的句子,便是完全倒装句,或叫全部倒装。
1.表示方位或方向的副词或介词短语,如here, there, up, down, in, away, off, out, in the room, on the wall以及表示时间的now, then等,置于句首且主语是名词时,句子完全倒装。
►Be quick!Here comes the bus.快点,公共汽车来了!►For a moment nothing happened. Then came voices all shouting together.片刻之间什么声音也没有,之后大家一起欢呼起来。
【注意】上述情况中,若主语是人称代词,则句子用部分倒装。
►Away they went.他们走了。
►Over it turns!它翻过来了!2.表语+连系动词+主语(表语可以是:形容词、介词短语、现在分词、过去分词)►Present at the meeting were Professor White, Professor Smith and many other guests.出席会议的有怀特教授,史密斯教授还有许多其他客人。
3.such+be+主语►Such are the facts: no one can deny them.这些就是事实,没有人可以否认它们。
部分倒装部分倒装只是把谓语的一部分提到主语前面,即把谓语部分的“助动词/情态动词/be 动词”提到主语的前面,谓语的其他部分仍在主语后面。
1.So/Neither/Nor+助动词/情态动词/be动词+主语(表示前一句中的内容也适合另一人或另一事物)►Lily can't play table–tennis. Neither can I.莉莉不会打乒乓球,我也不会。
2.否定副词never, nor, not, hardly, little, seldom, scarcely, rarely等,及表示否定意义的介词短语at no time, in no case, under/in no circumstances, by no means, on no condition等置于句首时。
高考英语二轮复习第一部分_语法填空_专题三_特殊句式及固定搭配
【典例8】Unless
(invite),he won’t come to the party.
答案及剖析:invited 考查省略及非谓语动词的用法。根据语境可知,此处 是由Unless he is invited省略he和is变化而来,所以填提示词的过去分词 形式,表被动。句意:除非受到邀请,否则他不会来参加聚会。
(3)被强调成分是作主语的代词时用主格,是作宾语的代词时用宾格。 It was he that helped me yesterday. 昨天是他帮助了我。 It was me that he helped yesterday. 他昨天帮助的是我。
(4)被强调部分既包括人又包括物,用that不用who。 It was the things and people that they remembered that they were talking about. 他们谈论的是他们记得的人和事。
专题三 特殊句式及固定搭配
考点一 特殊句式
一、倒装句 【典例1】 Only when he reached the tea-house it was the same place he’d been in last year.
he realize
答案及剖析:did 考查倒装。分析句子结构可知,此处应该填助动词did,构 成倒装句。句意:只有当他到达茶馆时,他才意识到他去年也来过这家茶馆。 only修饰状语从句when he reached the tea-house放在句首,主句要用 部分倒装语序,根据语境为一般过去时,所以填助动词did。
二轮·英语
二、强调句型
【典例3】It was not until near the end of the letter
高考英语语法填空专项分类训练:专题24 特殊句式100题
备战高考英语语法填空专项分类训练专题24 特殊句式100题1.When __________ (practise) it quietly and slowly, you can sense the existing of air and gradually in the near future this sport will become your new lifestyle.2.In an afternoon of 1929, a farmer and his son in a village of China’s Sichuan Province accidentally discovered a true wonder of civilization when __________ (dig) a well.3.That is why the Japanese government is reportedly going to approve a strategy of discharging the water to the ocean, as __________ (recommend) by scientific advisers.4.This provides a reminder that it is users’ attitudes __________ shape their experiences on social media. 5.But it is China __________ has always held the most fascination for him and last year he became the first filmmaker from outside China to make a film about the life and work of poet Du Fu.6.While __________ (do) my homework at home, I heard my name called.7.No child shall be, unless __________ (accompany) by an adult, allowed out of the school during the day. 8.At no time _________they actually break the rules of the game. It was unfair to punish them.9.It is likely that babies are not born knowing the basic fact of the universe; ______ are they ever clearly taught it.10.Not until recently________ they encourage the development of tourist-related activities in the rural areas. 11.Then ________ (come) the final awards ceremony at the end of the year. Cathy didn’t expect any award but was still there to cheer on her friends and praise their accomplishments.12.Never before _________she seen anybody who can play tennis as well as Robert.13.Not only _________the nurses want a pay increase, they want reduced hours as well.14.Not once _________it occur to Michael that he could one day become a top student in his class.15.Not until he went through real hardship________ he realize the love we have for our families is important. 16.—Was it by cutting down staff ___________she saved the firm?-No, it was by improving work efficiency.17.Was _______because Jack came late for school that Mr. Smith got angry?18.________(catch) the morning train, he would not have been late for the meeting.19.It was consistent love and kindness __________ won a lifelong friendship of loyalty.20.Much ________ I like this book, I like others much better.21.So fast ______ that we can hardly imagine its speed. (travel)22.It was not until the 1970s ______ Tu succeeded in discovering qinghaosu.23.While________ (work), they listened to the songs.24.It is these traditional customs and festivals ________ enable us to remember our own precious history and culture.25.Fear, if __________ (deal) with properly, can serve as a great power.26.Among the crises that humans are faced with ________ (be) the ignorance of environmental issues. 27.Children, when ________(accompany) by their parents, are allowed to enter the stadium.28.It was 80 years before Christopher Columbus crossed the Atlantic ________ Zheng He had sailed to East Africa.29.Not until recently_______ (do) they encourage the development of tourist-related activities in the rural areas. 30.It’s not what happens to us that ________(determine) our lives—it’s what we make of what happens.31.It is coffee __________ they always drink in the afternoon.32.It is because I know you like the culture of China ____________I would like to invite you to admire it. 33.There ____________(be) large amounts of homework and a great many examinations for us students every day.34.They knew her very well. They had seen her ________(grow) up from childhood.35.It is your teamwork and good spirits ________ impress us deeply.36.Diets have changed in China—and so too ________ its top crop.37.It was when I failed the final exam last term ________ I woke up to the fact that I should work harder. 38.Behind every book is a man, behind the man is the race, and behind the race _______(be) the natural and social environments.39.When ________ (absorb) in his world of music,he felt as if he could “see” the beauty of the world around him,like he had in his previous life.40.It is in the factory________you’re going to pay a visit________this kind of computer is made.41.The plant will choke ponds and waterways if________(leave) uncontrolled.42.They could be interpreted as a welcoming greeting from a close friend, especially if ________ (accompany) by a gentle smile.43.I have nothing to do but________ (sleep) .44.It is not the story itself but what is reflected in the story that________ (count) .45.When the city of Pompeii was dug from its resting place, its walls were fresh as if ________(paint) yesterday.46.When ______(chase) by an enemy, a rabbit can run as fast as 18 miles an hour.47.It’s in the Summer Olympics _________ you have the running races, together with swimming, sailing, etc.48.Inside the container________(be) household goods in ancient times.49.In the afternoon, we delivered a lecture to the students there. Not only ________ we give them tips on how to choose proper books for themselves, but also guided them on how to read different kinds of books.50.Film has a shorter history, especially when________ (compare) to such art forms as music and painting. 51.But ________ was not only her sex that kept her long marginalized and long unsung.52.It is for this reason______________ Spanish is the main official language of Peru.53._________ seems to be no better way to solve this problem.54.Once, while _________(work) overnight at a store, he let a homeless man sleep in his truck.55.Not only _________ television appeal to those who can read but to those who can’t.56.When ________(offer) help, one often says “Thank you” or “It’s kind of you”.57.Small and ________ (distance) from cities though my hometown is, there is always something different to catch your eyes.58.Only when Lily walked into the office________she realize that she had left the contract at home. 59.Intelligent________you are, I suspect you will fail.60.She would be much healthier now ________she not burdened herself with that much pressure from work when young.61.________(be) it not for the support of the teachers,the student could not overcome her difficulty.62.Mr Mike didn't understand ________it was that made his wife so upset this morning.63.A child,if actively________(engage) in classroom activities,can be taught many things.64.It was after Mrs Dodd became an adult ________she realized the strength and selflessness her father had shown in raising his children as a single parent.65.One has reason to believe that China's anti-corruption over the past few years, tough________it is, has achieved inspiring progress.66.It is required that under no circumstances________we betray ourselves even if there are temptations like money or beauty.67.Only then________we realize there was an earthquake. I was too frightened to move.68.I'm sorry.________it not been for my illness,I would have come and lent you a helping hand.69.________was when I got back to my apartment that I first came across my new neighbors.70.I don't know________it was that our headmaster was absent from such an important meeting.71.It is for these reasons ______ I am firmly convinced that this rule will promote the learning atmosphere and our teamwork spirit.72.Only if a teacher has given permission _________a student allowed to enter the room.73.It was the culture, rather than the language, ________ made it hard for him to adapt to the new environment abroad.74.There is no ________ (say) whether he'll come.75.It is his sense of responsibility and devotion ________makes us admire him.76.It was him ________ inspired me to complete the tryout.77.Misunderstandings resulting from lack of social communication,unless ________ ( handle) properly,may lead to serious results.78.Only then ________ she realize how serious the situation had been.79.The passengers on board were asked to fasten their seat belts as ________ (instruct) the moment they settled down.80.Ted never dreamt of there _________________(be) a chance for him to be sent abroad soon.81.It is only by listening to and understanding each other ____________ problems between parents and children can be settled.82.Don’t play video games too often, for once _______(addict) to them, you will suffer later on.83.It was in the company ________ I worked two years ago ________ I met Mr Smith.84.Bicycles are a very common form of transport in the world. There________ (be) about one billion bicycles worldwide.85.While ________ (fly) through the wind, it produced sound like the music produced by gu – zheng, which is a traditional Chinese musical instrument.86.Evidence suggests that you can remove more germs(病菌)from your hands for this amount of time while________ (wash)your hands.87.Into the dark apartment ________ (walk) David,who was quite surprised when everyone shouted “Happy birthday!”88.I hope you'll visit China next month. If ________,I'd like to be your tour guide.89.It was when I got back to my apartment______________I first came across my new neighbors.90.Some diseases are not at all dangerous if _____________(treat) in time.91.A pitcher needs to throw the ball with one hand and __________ (wear) a baseball glove on the other—something that Jim couldn’t do.92.When first ________ (introduce) to the market, these new products in their company enjoyed a great success. 93.You shouldn’t go to his party unless ________ (invite).94.________(there be) no modern telecommunications, we would have to wait for weeks to get news from around the world.95.Although ______(warn)of danger, tourists can’t help taking photos near the cliff (悬崖).96.It is said that one’s EQ matters more than his IQ when _________ (predict) his future success. 97.When___________(compare) different cultures, we often pay attention only to the differences without noticing the similarities.98.Quiet student________ he may be, he talks a lot about his favorite singers after class.99.We have been keeping guard for four hours and now ________(come) your turn.100.The door opened, and in ________(come) some pupils with flowers in their hands for the teacher.参考答案:1.practising【详解】考查状语从句的省略。
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语法填空之特殊句式和固定搭配专题一特殊句式考点1. 强调句强调句型的基本结构为:It is/was+被强调部分+that/who...使用强调句型的几个注意事项:(1)被强调成分是主语,who/that之后的谓语动词应该在人称和数上与原句中的主语保持一致。
☛It is I who am right. 对的是我。
☛ It is he who is wrong.错的是他。
☛ It is the students who are lovely.可爱的是学生们。
(2)被强调成分即使是在句子中作时间状语、地点状语、原因状语等,也不能用when, where, because,而要用that。
☛It was in front of the bank that the lady was robbed.那位女士是在银行前面遭遇抢劫的。
☛It was because of the heavy rain that he came late.他是因为下大雨来晚的。
(3)被强调成分是作主语的代词时用主格,是作宾语的代词时用宾格。
☛It was he that helped me yesterday.昨天是他帮助了我。
☛It was me that he helped yesterday. 他昨天帮助的是我。
(4)被强调部分既包括人又包括物,用that不用who。
☛It was the things and people that they remembered that they were talking about.他们谈论的是他们记得的人和事。
注意:助动词do, does, did用在动词原形前,用来对谓语动词进行强调。
e.g. Do come here tomorrow.e.g. He does study hard.【易混易错】强调句型与主语从句、状语从句、定语从句的区别1.强调句型与主语从句的比较强调句型将句子中的it is/was与that/who同时省去,句子仍然成立;而包含主语从句的句子用that从句代替it,句子成立。
如:☛It was Li Lei’s brother that you met in the street yesterday.你昨天在街上遇到的是李雷的哥哥。
☛It is exciting that we have succeeded in sending up Shenzhou X.我们成功地发射了神舟十号这件事情真令人兴奋。
(本句若将It is 及that同时省去为:We have succeeded exciting in sending up Shenzhou X.显然句子错误,因此,本句不是强调句型,that引导主语从句,it是形式主语。
)2.强调句型与定语从句的比较强调句型中的it没有实际意义,it is/was与that/who去掉后句子结构仍然完整。
但定语从句中的it be和作主语的that去掉后句子结构不完整。
3.强调句型与状语从句的比较强调句型中的it is/was与that/who同时省去,句子仍然成立;而包含状语从句的句子it是主语。
如:☛It was 8 o’clock when they went home.他们回家时是8点。
(句中代词it作主语,指代时间,when引导时间状语从句)☛It was at 8 o’clock that they went home.他们是在8点回家的。
(本句是强调句型,at 8 o’clock是被强调部分)【典型例析】It was not until near the end of the letter _______ she mentioned her own plan.end of the letter。
原句为:She didn’t mention her own plan until near the end of the letter.。
巩固练习:一.单句填空。
1.You are waiting at a wrong place. It is at the hotel_________ the coach picks uptourists.2. It was when we were returning home________ I realized what a good feeling it was to havehelped someone in trouble.3. Only when Lily walked into the office_________ she realize that she had left the contract at home.4. Bach died in 1750, but it was not until the early 19th century______ his musical gift was fully recognized.5. Was it because Jack came late for school _________ Mr. Smith got angry?6. Only when you can find peace in your heart _____ you keep good relationships with others.7. Not until he went through real hardship_______ he realize the love we have for our families is important.8. Only after talking to two students______ I discover that having strong motivation is one of the biggest factors in reaching goals.9. As we all know, _____ is what you do rather than what you say that matters.二.单句改错。
1.Was it yesterday when you met your old friend in the supermarket?2.It was from only a few supplies that she had bought in the village where the hostess cookedsuch a nice dinner.3.It was I saw him in the street yesterday.4.It was he that\who we met at the school gate.5.It is only I that are willing to go to see the film.6.It was not until 11 o’clock last night he went to bed.7.Where is it you met Jack yesterday?8. Do careful9.He do enjoy swimming10. He does do his homework last night专题二固定搭配和句式考点1 常见词组as a matter of fact;be proud of; by the way; according to;congratulate...on...;devote...to...;earn one’s living;keep one’s word; make up one’s mind;be concerned about...;catch up with...; keep an eye on...;concentrate on...等。
考点2 特殊固定用法keep...doing sth.;prevent...from doing...;like doing...;need doing; feel like doing;get sth. done; have sth. done;have sb. doing/do sth.;enjoy doing; succeed in doing等。
考点3 常用句型so/such...that...It is... (for sb./of sb.) to do sth.There is no doubt/need that...There is no sense in doing sth.It’s ( high) time that sb. did/should do sth.It is no good/use doing sth.It is/was the first (second) time that sb. has done/had done sth.It is no wonder that...注意:答题时注意固定搭配的介词、名词、动词的形式和特殊句型的形式主语、连接词及相应时态的运用等。
考点4.包含it的常用句型:1.用在动词 like, love, dislike, hate, appreciate等后作宾语。
如:☛I hate it when people talk with their mouths full.我讨厌人们满嘴食物说话。
2.作形式主语或形式宾语①用于"It is+adj./n.+不定式或动词-ing形式或that从句"中。
如:☛It is certain that he will succeed.他一定会成功。
②用于"It seems/appears/happens/occurs to sb.+that 从句"中。
如:☛It occurred to me that I should ask the police for help.我突然想起我应该向警方求助。
③用于"It looks as if/as though..."中。
如:☛It looks as if we’re going to miss the plane.似乎我们要误了班机了。
④用于"It is+过去分词+that从句"中。
如:☛It is believed that he will be admitted to Beijing University.人们相信他将被北京大学录取。
⑤用于"think/find/make+it+adj./n. +不定式或动词-ing形式或 that从句"中。