英语关键句型在写作和口语表达中起着重要的作用，它们可以帮助我们组织思路，提供逻辑连接，使文章或对话更具连贯性和说服力。以下是一些常用的英语关键句型及其应用实例：
1. 引出观点/主题：
- It is widely believed that...（广泛认为）
- There is a growing consensus that...（越来越多的人一致认为）
- It goes without saying that...（不言而喻）
- The issue/topic under discussion is...（正在讨论的问题/主题是）
例句：It is widely believed that education plays a crucial role in shaping one's future.
2. 表达观点/主题：
- From my perspective...（从我的角度来看）
- In my opinion/view...（在我看来）
- It seems to me that...（在我看来）
- Personally, I think/believe...（就我个人而言，我认为）
例句：In my opinion, technology has greatly improved our lives in many aspects.
3. 提供原因/解释：
- The reason why... is that...（...的原因是）
- This can be attributed to...（这可以归因于）
- One possible explanation for this is...（其中一个可能的解释是）
例句：The reason why people choose to live in cities is that cities offer more job opportunities and better infrastructure.
4. 结果/影响：
- As a result/consequence, ...（因此，...）
- This leads to...（这导致...）
- The impact/effect of... is...（...的影响是）
例句：As a result of climate change, we are witnessing more frequent and severe natural disasters.
5. 对比/对立：
- On the one hand, ... on the other hand...（一方面，另一方面）
- Although..., ..., in contrast...（尽管..., ..., 相反）
例句：On the one hand, technology has made our lives more convenient, but on the other hand, it has also led to increased screen time and decreased physical activity.
6. 引用他人观点：
- According to...（根据...）
- As stated by...（如...所述）
- ... once said...（...曾经说过）
例句：According to a famous philosopher, "The only true wisdom is in knowing you know nothing."
1. It作先行主语和先行宾语的一些句型 She had said what it was necessary to say.
2. 强调句型 It is not who rules us that is important, but how he rules us.
3. "All+抽象名词"或"抽象名词+itself"(very+形容词)He was all gentleness to her.
4. 利用词汇重复表示强调 A crime is a crime a crime.
5. "something(much)of"和"nothing(little)of" "something of"相当于"to some extent"，表示程度。在疑问句或条件从句中，则为"anything of "，可译为"有点"，"略微等。""译为毫无"，"全无"。"much of"译为"大有"，"not much of"可译为"算不上"，"称不上"，"little of"可译为"几乎无"。something like译为"有点像，略似。
They say that he had no university education, but he seems to be something of a scholar.
6. 同格名词修饰是指of前后的两个名词都指同一个人或物，"of"以及它前面的名词构一个形容词短语，以修饰"of"后面的那个名词。如"her old sharper of a father"，可译为："她那骗子般的父亲"。Those pigs of girls eat so much.
7. as…as…can(may)be It is as plain as plain can be.
8. "It is in(with)…as in(with)" It is in life as in a journey.
9. "as good as…"相等于，就像，几乎如;实际上，其实，实在。
The merchant as good as promised the orphan boy, that he would adopt him.
10."many as well…as"和"might as well …as" "many as well…as"可译为"与其……，不如……，更好"，"以这样做……为宜"，"如同……，也可以……"等等。"might as well …as"表示不可能的事，可译为"犹如……"，"可与……一样荒唐"，"与其那样不如这样的好"等等。
One may as well not know a thing at all as know it imperfectly.
11."to make…of"的译法(使……成为……，把……当作)I will make a scientist of my son.
12. too…+不定式"，not(never)too…+不定式"，"too…not+不定式She is too angry to speak.
13. only(not, all, but, never) too …to do so "和"too ready (apt) + to do"结构中，不定式也没有否定意义，凡是"not"，"all""but等字后+"too…to，"不定式都失去了否定意义，在"too ready(apt) +to do"结构中，不定式也没有否定意义。You know but too yell to hold your tongue.
14. "no more …than…"句型
A home without love is no more a home than a body without a soul is a man.
15. "not so much…as"和"not so much as …"结构，"not so much…as"="not so much as …"，其中as有进可换用but rather，可译为："与其说是……毋须说是……"。而"not so much as"="without(not)even，"可译为"甚至……还没有"。
The oceans do not so much divide the world as unite it.
16. "Nothing is more…than"和"Nothing is so …as"结构，"Nothing is more…than"和"Nothing is so …as"都具有最高级比较的意思，"Nothing I"可换用"no"，"nobody"，"nowhere"，"little"，"few"，"hardly"，"scarcely"等等，可译为"没有……比……更为"，"像……再没有了"，"最……"等。 Nothing is more precious than time.
17. "cannot…too…"结构,"cannot…too…"意为"It is impossible to overdo…"或者，即"无论怎样……也不算过分"。"not"可换用"hardly"，"scarcely"等，"too"可换用"enough"，"sufficient"等 You cannot be too careful.
18. "否定+but "结构，在否定词后面的"but"，具有"which not"，"who not"，"that not"，等等否定意义，构成前后的双重否定。可译成"没有……不是"或"……都……"等
Nothing is so bad but it might have been worse.
19. "否定+until (till)"结构，在否定词"no"，"not"，"never"，"little"，"few"，"seldom"等的后边所接用的"until/till"，多数情况下译为"直到……才……"，"要……才……"，把否定译为肯定。 Nobody knows what he can do till he has tried.
20. "not so…but"和"not such a …but"结构，这两个结构和"否定+but"的结构差不多，不同之点是这两个结构中的"but"是含有"that…not"意味的连续词，表示程度。可译为"还没有……到不能做……的程度"，"并不是……不……"，"无论怎样……也不是不能……"等。
He is not so sick but he can come to school.
21."疑问词+should…but "结构，这个结构表示过去的意外的事，意为"none…but"，可译为"除了……还有谁会……"，"岂料"，"想不到……竟是……"等。Who should write it but himself?
22. "who knows but (that)…"和"who could should…but"结构，这个结构是反问形式，一般意译为"多半"，"亦未可知"等等，有时也可直译。Who knows but (that) he may go?
23. "祈使句+and"和"祈使句+or"结构，"祈使句+and"表示"If…you…"，"祈使名+or"表示"if…not…，you。
Add love to a house and you have a home. And righteousness to a city and you have a community. And truth to a pile of red brick and you have a school.
24. "名词+and"结构，在这个结构中，名词等于状语从句，或表示条件，或表示时间。
A word, and he would lose his temper.
25. "as…,so…"结构，这里的"so"的意思是"in the same way"(也是如此)。此结构表明两个概念在程度上和关系上相似。As rust eats iron, so care eats the heart.
26. "if any"结构，"if any"和"if ever"，意思是"果真有……"，"即使有……"，表示加强语气。与此类似的还有："if anything"(如有不同的话，如果稍有区别)，"if a day"(=at least，至少)。
There is little, if any, hope.
27. "be it ever(never)so"和"let it be ever(never)so"结构，这里，"be it"中的"be"是古英语假设语气的遗留形式，现代英语则使用"let it be"。"ever so"和"never so"都表示同一意思，都表示"very"。 Be it ever so humble (let it be ever so humble), home is home.
28. "the last+不定式"和"the last +定语从词"结构，这种结构中的"last"意思是"the least likely"，用于否定性推论。可译为"最不大可能的"，"最不合适的"，由原意的"最后一个……"变成"最不可能……的一个"。 He is the last man to accept a bride.
29. "so…that…"句型，这个句型的意思是"如此……，以致于……"，但在翻译成汉语时，许多情况下，并不是一定要译成"如此……以致于……"，而是变通表达其含义。
He ran so fast that nobody could catch him up.
30. "more + than+原级形容词(副词)"结构，这是将不同性质加以比较，其中的"more"有"rather"的意思 It is more than probable that he will fall.
31. "more than +动词"结构，这种结构表示动词的程度，可译为"异常"，"岂止"，"十二分地"等。This more than satisfied me.
32. "good and …"的副词用法，译为"非常"，"很"等。类似还有"nice and …", "fine and …," "lovely and …", "bright and …", "rare and …", "big and …"等，均表示程度。
The apples are good and ripe.
33. "and that"结构，这个"and that"应译为"而且……"，表示对它前面陈述部分的语气加强，"that"代表前面的整个陈述部分。Return to your work , and that at once.
34. "at once…and"结构，这个结构译为"既……又……"，起相关连接的作用，相当于"both…and…"。 The novel is at once pleasing and instructive.
35. "in that…"结构，这个结构的意思是"在那一点上(方面)"，可译为"因为"。类似的结构还有"in this…"。The budget is unrealistic in that it disregards increased costs.
36. "the name notwithstanding"结构，这个结构中"notwithstanding"是介词，这个介词可以置前，可以置后，比如也可写成："notwithstanding the name"。起让步状语的作用。
Some people think of the storage battery as a sort of condenser where electricity is stored.But this is an entirely wrong conception, the name notwithstanding.
37. "Every…not"和"All…not"结构，"Every…not"表示"不见得每个……都是……";"All…not"表示"不见得所有……都是……"的意思。Every man is not polite, and all are not born gentlemen.
38. "may as well not…as"结构，此结构可译为"与其……不如不……"。
One may as well not know a thing at all as know it but imperfectly.
39. "have only to …do"结构，此结构表示"只须(消)……就能……"的意思。
We have only to turn to that extraordinary discovery made by Edison to see the significance of it.
40. "not (no) …unless…"句型
No increase in output can be expected unless a new assembly line is installed.
41. "better…than…"句型
Better my life should be ended by their hate, than that hated life should be prolonged to live without your love.
42. "as it were"是一个非常常用的插入语，意思是"好象"，"可以说"等。
Apiece of iron near a magnet, though apparently separate from it, feels, as it were, the threads of this attachment.
43. 复杂结构，在下面例句中，由于anyone的定语从句过长，把谓语must realize提到定语从句之前。
Though faith and confidence are surely more or lass foreign to my nature, I do not infrequently find myself looking to them to be able, diligent, candid, and even honest. Plainly enough, that is too large an order, as anyone must realize who reflects upon the manner in which they reach public office.
44. "not…any more than…"为："不能……，正如不能……"。
One cannot learn to sketch and express himself graphically only by reading about it any more than one can learn to swim while standing by the pool.
45. "By that as it may"是"Let it be that as it may"的省略形式，是由"be"引起的另外一种假设结构，意思是"虽然如此，尽管这样"。
It is said that the nerve poison is the more primitive of the two, that the blood poison is, so to speak, a new product from an improved formula. Be that as it may, the nerve poison does its business with man far more quickly than the blood poison.
46. "if at all"是一个由"if"引起的主谓结构不完整的短句结为"即将……"，"即使……"等。
I can see only with great difficulty, if at all.
47. 由there引起的句型容易产生复杂的句子结构.
There have been opened up to the vast and excellent science, in which my work is the beginning, ways and means by which other minds more accurate than wine will explore its remote corners.
48. "range from …to…"结构。这是一个常见结构，译时很多情况下应变通处理，不能完全依靠辞典上的释义。
Computer applications range from an assembly line completely run by computers to a children toy responding to remote signals.
49. "the way…"结构
I always thought she was a common-sense person who discussed things the way they ought to be discussed.
50. 复杂宾补结构
In recent years, the development of sensitive and accurate measuring equipment has made it possible to measure the acuity of hearing of any individual at different frequencies.
51. 某些分隔结构
1) 动词短语相关部分被分隔(当"make use of "，"take notice of"，"pay attention to"，
等动词短语变成被动语态时)。Use is made of solar energy in heating houses.
2)双重定语引起的分隔。
But there is of culture another view, in which not solely the scientific passion, the sheer desire to see things as they are, natural and proper in an intelligent being, appears as the ground of it.
52. "to be doing…when…"是一个句型，多译为"某人正在做……时，突然……"。在简单的句子中容易看出，一旦句子变得复杂一些，可能就不太容易识别这种句型。
She said she and a friend had gone out to dinner that night, and were walking home together at about 10 o"clock, when a "very big, very tall man", accosted them and demanded their purses.
53. "too…to"句型
Then I remembered how often I, too, had been indifferent to the grandeur of each day, too preoccupied with petty and sometimes even mean concerns to respond to the splendor of it all.
54. "so much that…"句型
But he developed gradually a very musical English. He learnt to write sentences that fall away on the ear with a misty languor and it delighted him so much that he could never have enough of it.
55. "when"引导状语从句有时并不好译，不能一看到when从句就考虑译为"当……的时候"，它还有许多种译法。
Anything is better than not to write clearly. There is nothing to be said against lucidity, and against simplicity only the possibility of dryness. This is a risk that is well worth taking when you reflect how much better it is to be bold than to wear a curly wig.
56. "not…because…"，有时可否定前面，有时可否定because本身，往往出现歧义。应根据上下文面判定。
In 1600 the earth was not the center of the universe because the majority then supposed it was; nor, because she had more readers, was Ella wheeler Wilcox a better poet than Father Hopkins.
57. "so…that, such…that"是一个普通的句型，但在同一个句子里有两处使用它却比较少见。
The truth is, that in one point of view, this matter of national literature has come to such a pass with us, that in some sense we must turn bullies, else the day is lost, or superiority so far beyond us, that we can hardly say it will ever be ours.
58. "by doing…"结构。这个结构的意思是"通过(做)……"，但翻译实践中不能拘泥于这种释义，不少情况下需要灵活变通。The hippos, by depositing dung in the water, fed the fish that support the storks that destroy the rare trees.
59. 下面例句为一倒装句，主语很长，而且又含有非常复杂的句型。这是以形容词作表语的倒装，翻译实践中多把倒装部分译到最前面。
No less obvious is the fact there are great numbers of people so constituted or so brought up that they cannot get so much pleasure out of processes and experiences resulting in a poorer life less full of meaning.
60. "what…of"句型
I can not say of myself what Johnson said of Pope: He never passed a fault unamended by indifference, nor quitted it by despair. I do not write as I do; I write as I can.
61. 英语的一个习惯用法是：当否定谓语think(believe)时，实际上是否定其后面的宾语从句。否定就落在宾语从句上。这样宾语从句就变成了双重否定，译时可以按双重否定译，也可按肯定来译。
It is a valuable work. I do not think anyone writes so well that he cannot learn much from it.
62. "to have not…(as) to see…"中的不定式也有否定意味。
He had not the good breeding to see that simplicity and naturalness are the truest marks of distinction.
63. "It occurred to sb. that…"意为"突然想到"，"It dawned on sb.that…"."突然想起"等。 从句是想起的内容。
I remember once being on a bus and looking at a stranger. He suddenly looked back at me-i.e.our eyes met. My instinctive reaction was to avert my gaze. It occurred to me that if I had continued to maintain eye contact, I would have been rude and aggressive.
64. "It follows that…"="It happens as a result…"常常被译为"由此可见"，"因此"，"从前"，"可以推断"等等。
It follows that the housewife will also expect to be able to have more leisure in her life without lowering her standard of living. It also follows that human domestic servants will have completely ceased to exist.
65. "that"s all there is to it "，意思是"也不过如此而已"。可根据上下文视情况处理。
If I"m touched, I"m touched-that"s all there is to it.
66. "The chances are that…"是一句型，译为"有可能……"。
The chances are you will never attempt that speed with poetry or want to race though some passages in fiction over which you wish to linger.
67. Feel, see, leave引起宾语的宾语补足语，或在被动语态中引起主语补足语的某些惯用句型，有时see和feel这两个词的被动式不大好译。遇到这种情况应挖掘其深层含义，不要拘泥于表面形式。The education of the young is seen to be of primary importance.
68. 某此以no, nowhere, never, not…bout, not…any, nothing but, hardly, scarcely, seldom等否定词语引出的一些结构。I never go past the theatre but I think of his last performance.
69. 某些用choice between, to know better, whether or, should have avoided(或done better)等表示从两种做法中选取一种更好的做法
Then we are faced with a choice between using technology to provide and fulfil needs which have hitherto been regarded as unnecessary or, on the other hand, using technology to reduce the number of hours of work which a man must do in order to earn a given standard of libing.
70. 某些省略情况，应清单确认省略的内容。
The country had grown rich, its commerce was large, and wealth did its natural work in making life softer and more worldly, commerce in deprovincializing the minds of those engaged in it.
71. 修饰成分(包括定语、定语从句、同位语从句等)多而长。
Across the court from the Manhattan apartment that I have occupied for the past few years is a dog that often hurls insults into the darkness, a few of which my dog refuses to accept and makes a tart reply.
72. 一些外位语，所谓外位修饰，指从句子结构和内容上不起主要信息表达功能的部分。其作用是从语气和连接上下文等方面进行补充。在翻译成汉语时，往往可独立成句，外形上不保留修饰的痕迹。
Of course, nobody was hurt this time, because we had all been to dinner, none of us being novices excepting Hastings; and he having been informed by the minister at the time that he invited him that in deference to the English custom the had not provided any dinner.