Inversion

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倒装(Inversion)

倒装(Inversion)

倒装(Inversion)一概述在英语中,主语和谓语的语序通常是主语在前,谓语在后,但有时谓语的全部或一部分却提到主语的前面,这种语序叫做“倒装”。

倒装分为“全部倒装”和“部分倒装”。

在全部倒装的句子中,整个谓语都放在主语的前面;在部分倒装的句子中,只是谓语中的一部分(如助动词、情态动词或系动词be等)放在主语前面,其余部分仍放在主语后面。

一)完全倒装完全倒装即把整个谓语放到主语之前(是整个谓语动词,而非助动词)。

例如:In came the teacher and the class began . (老师走了进来,然后开始上课。

)1.在there be 结构中There is a rumour that a large company wants to build a factory in your town.There will be a basketball match this afternoon.2、在以there或here开头的句子中,谓语动词为be, come, go, run, walk, rush, fall以示强调。

例如:Here is China’s largest tropical forest.Here are some picture-books.There comes the bus!There goes the bell!Here comes Mary!注:如果主语为人称代词,仍用自然语序,例如:Here you are. / Here we are. / Here it isThere he comes! Here she comes!3、在以out, in ,up, down, away等副词开头的句子中,谓语动词为be, come, go, run, walk, rush, fall等,以示强调。

例如Up flew the red balloon.Out rushed a policeman from among the crowd.注:如果主语为人称代词,仍用自然语序,例如Away they went./ Down it flew. / Up it went.4、由then 或now引起,谓语动词为come, follow, begin, end, be等的句子,Then came a new difficulty.Then followed eight years of the Anti-Japanese War.Now comes your turn.5、直接引语的一部分或全部放在句首时,有时也用倒装。

倒装(Inversion)

倒装(Inversion)

用于某些祝愿的句子。 1) May you succeed! 2) Long live China!
注意: 代词作主语时, 主谓语序不变。
Here comes he. × Here he comes. Away went they. × Away they went.

The boy /He rushed out Out rushed the boy. Out he rushed
考点二:为了句子的平衡或 强调表语,将表语置于句首 时,句子用完全倒装。
在 so/such …that 的结构中,若so/such
置于句首,则句子部分倒装。
1) It is such an interesting book that John
has read it twice. Such an interesting book is it that John has read it twice. 2) It is so interesting a book that John has read it twice.
考点七 用于句首省略了if的虚拟条件句 子中并句中含有should, had或were. ① Should it rain, the crops would grow better. If it should rain, the crops would … ② Were there no steel, there would be no modern industry. It there were no steel, there would be … ③ Had it not been for the captain, the ship would have sunk. If had not been for the captain, the ship …

inversion名词解释

inversion名词解释

inversion名词解释
嘿,你知道啥是 inversion 不?Inversion 啊,就像是一场奇妙的变身!比如说吧,本来好好的顺序,突然就给颠倒过来啦,就像你本来是先
穿鞋子再出门,结果变成先出门再穿鞋子,这多有意思呀!这就是一
种 inversion 呀。

想象一下,音乐里也有 inversion 呢!本来高音在上面,低音在下面,突然来个颠倒,高音跑到下面去了,低音反倒在上面了,这就给音乐
带来了不一样的感觉,就好像原本走的平坦大路,突然变成了曲折小径,充满了新奇和挑战。

还有呢,在语言里也有 inversion 的身影哦!有时候为了强调某个东西,句子的结构就会发生变化,本来应该先说的放到后面去了,这就
像是给句子来了个大变身。

比如说“多美的花呀”,要是正常说可能就
是“这花很美”,但这样一颠倒,那种惊叹和赞美的感觉就更强烈啦,
对吧?
再看看我们的生活,有时候不也会有这种 inversion 吗?就像本来你
每天都是按时起床吃饭上班,突然有一天决定先去公园溜达一圈再做
其他的,这就是生活中的一种 inversion 呀,给平淡的日子带来了不一
样的色彩。

Inversion 可不只是简单的颠倒,它是一种创造力的体现呀!它能让
我们从熟悉的事物中看到不一样的一面,就像打开了一扇新的窗户,
让我们看到了以前没看到过的风景。

它可以让音乐更动人,让语言更有魅力,让生活更有趣味。

所以呀,inversion 真的是个超级神奇的东西呢,难道不是吗?
我的观点就是:inversion 是一种能够带来新奇、变化和创造力的现象,无论是在艺术、语言还是生活中,都有着独特的魅力和价值。

完全倒装句

完全倒装句

倒装语序(谓语 主语 主语) 倒装语序(的两种结构:
完全倒装eg: Are you afraid of your enemies? 完全倒装 There are 11 other minerals that make up the salt water of the oceans. 部分倒装eg: 部分倒装eg: Only by seizing every minute can we finish it on time.
倒装句的含义
• 倒装(Inversion)是一种语法手段,它是相对正常语序而 倒装( 言的。我们通常把主语在前谓语在后看 作正常语序,如 陈 述句。如果使用与正常语序相反语序的句子,就叫做 倒装句。 • 使用倒装通常是出于语法结构的需要,有时也是为了强调。 强调。 强调 如: • (1)How goes the time? • (2)Here is the one o’clock news. • (3)Under the tree was sitting a charming young girl.
完全倒装句
• 三、直接引语的全部或一部分放在句首时,引述动词和它的主语有时 直接引语的全部或一部分放在句首时, 装。 “May I come in and take a rest?” asked the pool girl. “Get out of the room!” shouted the angry woman. 四、以here, there, now, in ,out, up, down, away, then等副词开头 等副词开头 的句子中,句子要倒装,以示强调。习惯上,除以then开头的句子用 的句子中,句子要倒装,以示强调。习惯上,除以 开头的句子用 过去时外,其余一般使用现在时。 过去时外,其余一般使用现在时。 There goes the bell.铃声响了。 铃声响了。 铃声响了 There comes the bus! 汽车来了。 汽车来了。 Out rushed the children.孩子们冲出来了。 孩子们冲出来了。 孩子们冲出来了 Now comes your turn.现在轮到你了。 现在轮到你了。 现在轮到你了 Then came a new difficulty.接着有个新难题。 接着有个新难题。 接着有个新难题 [注意 在这种句型中,如果主语是代词时就不倒装。 注意] 注意 在这种句型中,如果主语是代词时就不倒装。 Here you are. There he comes.

倒装句

倒装句

倒装句倒装(Inversion)是一种语法手段,用以表示一定句子结构的需要和强调某一句子成分的需要。

英语的最基本结构是主、谓结构,倒装就是将这种比较固定的结构加以颠倒。

倒装有两种:将主语和谓语完全颠倒过来,叫做完全倒装(Complete Inversion)。

如:In came a man with a white beard. 只将助动词(包括情态动词)移至主语之前,叫做部分倒装(Partial Inversion)。

如:Only once was John late to class.英语句子的倒装一是由于语法结构的需要(即避免头重脚轻)而进行的倒装,二是由于修辞的需要(即强调)而进行的倒装。

前一种情况,倒装是必须的,否则就会出现语法错误;后一种情况,倒装是选择性的,倒装与否只会产生表达效果上的差异。

一、倒装句之全部倒装全部倒装是只将句子中的谓语动词全部置于主语之前。

此结构通常只用与一般现在时和一般过去时。

常见的结构有:1)now, then, thus, no longer, no more等表示时间的副词置于句首,谓语动词常用be, come, go,等。

例如:Then came the chairman.often, well, many a time, now and again 等方式或频度副词(短语)开头的句子中,要用部分倒装结构。

例如:Many a time has John given me good advice. / Often have we made that test.2)here, there, up, down, in, out, off, away; through the window, in the room, on the wall等表示运动方向的副词或地点状语置于句首,谓语动词常用sit, live, stand, run, come, go, be等。

inversion

inversion

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• (4)在as / though引导让步状语从句中,”尽管” 可出现“名词 (无冠词)/ 形容词 / 副词 / 分词 + as + 主语 + 动词” 或 “动词 + as + 主语 + 助动词“的倒装形式。 • 即:形容词/ 名词(无冠词)/ 副词/ 动词十as/ though/ that十主语…“ 尽管” • eg: Small as atoms are, they are made up of still smaller units. • Work hard as he could, he was still very poor.
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(5)在不带if的虚拟条件从句中。将were, should, had提前。 • If I were you, I would refuse his invitation. • Were I you, I would refuse his invitation. • If I had known the answer, I should have told you. • Had I known the answer, I should have told you. • If he should be interested in this subject, he might work hard at it. • Should he be interested in this subject,
5
• 3、副词now,then,thus(因此,如此)引导的句子里,谓语 come, follow, begin, end, be等. • Now comes your turn! • 现在轮到你了。 • Then followed another shot of gun. • 然后跟着另一声枪响。 • Thus ended the meeting. • 然后会议结束了。

英语专业四级考试必考语法3-inversion

英语专业四级考试必考语法3-inversion

Inversion(倒装)带否定意义的副词置于句首时(1)⏹带否定意义的词置于句首时,主谓语需要倒装。

⏹Rarely does he go to the movies.⏹Not for a moment did he doubt the truth of her honesty.⏹Little do I know about the meaning of this proverb.⏹Never before the night had I felt the extent of my power.含有否定词的介词短语在句首⏹含有否定词的介词短语在句首时,句子主谓倒装。

⏹这类介词短语包括:in no case, at no time, in no way, by no means, on no account, in nosense, under no circumstances, 等等。

意思为“决不,在任何情况下都不。

”“Only+状语”置于句首时的倒装(1)⏹“Only+状语”置于句首时,主谓语需要倒装。

⏹1) Only by practicing a lot outside class can we speak English fluently.⏹2) Only when I saw him did I remember that I promised to bring him a gift.⏹3) Only then did I know that I was wrong.not only位于句首时的倒装⏹句首是not only且连接分句结构时,引起局部(部分)倒装。

⏹Not only did we lose our money, but we were also in danger of losing our lives.⏹Not only can he sing very well, but he can also play some musical instrument veryskillfully.neither,nor表示“也不”时的倒装(1)⏹句首是neither,nor表示“也不”时,主谓语需要倒装。

Inversion倒装

Inversion倒装

Inversion倒装 倒装
2. 以否定词开头作部分倒装 , 如 Not only…but 以否定词开头作部分倒装, also, Hardly/Scarcely…when, No sooner… than等. 等 Not only did he refuse the gift, he also severely criticized the sender. Hardly had she gone out when a student came to visit her. No sooner had she gone out than a student came to visit her. 注意:只有当Not only… but also连接两个分句时, 连接两个分句时, 注意:只有当 连接两个分句时 才在第一个分句用倒装结构. 才在第一个分句用倒装结构 . 如果置于句首的 Not only… but also仅连接两个并列词语,不 仅连接两个并列词语, 仅连接两个并列词语 可用倒装结构. 可用倒装结构. Not only you but also I am fond of music.
Inversion倒装 倒装
3. so, neither, nor作部分倒装 , 表示 " 也 " , 作部分倒装, 作部分倒装 表示" 也不" "也不". Tom can speak French. So can Jack. If you won't go, neither will I. 注意: 注意 : 当 so引出的句子用以对上文内容加以证实 引出的句子用以对上文内容加以证实 或肯定时 , 不可用倒装结构 . 意为 " 的确如 此". Tom asked me to go to play football and so I did. ---It's raining hard. ---So it is.

Inversion

Inversion

Only after the New China________, ________ to C go to school. A. was founded; he was able B. was found; was he able C. was founded; was he able D. was found; he was able
C ________, he doesn’t study well.
A. As he is clever C. Clever as he is B. He is as clever D. As clever he is
引起倒装的前置
• 1.当表语前置时且主句较长或结构比较复杂。 Happy indeed are those who receive marvellous news after a long silence.
2.当前置宾语由“not a +名词”或者”not a single+名词”构成时,也会引起倒装 I had a terrible time playing roulette at the casino. Not a winning number did I have all night.
6.虚拟条件中的倒装:如果虚拟条件中的 谓语部分含有 were , had或should, 可 以把它们放在句首,省去连词if,变成倒 装 Had I known it earlier , I would not wait for a whole morning.
7. 让步从句的倒装 (1)as, though,结构为“adj(副词、动词、分词、名词) +as +主句+谓语” Young as she is , she has known much about the book. Much as I liked the book .I couldn't afford to buy it. Search as they would,they could find nothing in the house. Child as he is,he knows the right thing to do.

倒位的名词解释医学遗传学

倒位的名词解释医学遗传学

倒位的名词解释医学遗传学
温馨提示:文档内容仅供参考
在医学遗传学中,倒位(inversion)是指染色体的一种结构变异,其中染色体上的一段序列在相同染色体上发生了翻转,导致该段序列的顺序发生了逆转。

正常情况下,染色体上的基因和其他DNA序列按照一定的顺序排列,形成染色体的结构。

然而,在倒位中,染色体上的一段DNA序列发生了反向翻转,使得该段序列的顺序与正常顺序相反。

这种结构变异可以在染色体的任何部分发生,可以涉及一个或多个基因。

倒位可以分为两种类型:内源性倒位和外源性倒位。

内源性倒位发生在同一染色体上的两个不同区域之间,而外源性倒位则是指染色体上的一段序列与另一个染色体上的一段序列发生了交换。

倒位的发生通常是在染色体复制过程中发生的错误导致的。

这种结构变异可以对个体的健康和发育产生影响。

具体影响取决于倒位的大小、位置和涉及的基因。

有些倒位可能没有明显的临床表现,而其他倒位可能与某些遗传疾病或异常相关联。

在医学遗传学中,通过对倒位进行检测和分析,可以帮助确定某些遗传疾病的诊断和风险评估。

这种了解可以为患者提供更精确的遗
传咨询和管理。

Inversion(倒置法) 学生材料

Inversion(倒置法) 学生材料

Inversion(倒置法)Inversion of Word Order in Translating Word-Groups or Phrases(词组或短语的词序倒置)Examples & Drills8.1Give Chinese equivalents for the following, paying attention to the word order:card-playing, letter-writing, white-washing, absent-minded, open-door policy, time-sharing system, error correcting code you, he and I; Lisa, Linda and I; my wife (husband) and Imen and women, young and old; sisters and brothers (cf. boys and girls); dear mother and father1. Four cardinal points: north, south, east, and west.2. northeast, northwest, southeast, southwest; North and South Poles4. contradictions between ourselves and the enemy6. the iron and steel industry7. sooner or later; quick of eye and deft of hand8. heal the wounded and rescue the dying; life or death; now sink, now emerge9. the soil and water mixture11. rich and poor12. food, clothing and housing13. negative and positive14. hot and cold (water); hard and soft; old and new15. back and forth; to and fro16. by twos and threes17. right and left18. loss and gain19. land and water; fire and water; as well blended as milk and water20. track and field (events)21. model worker1.(罗盘上的)四个基本方位:东、南、西、北(《现代汉语词典》2002: 545)2. 东北,西北,东南,西南;南北极3. 玩(扑克)牌,写信,刷白(刷石灰水),心不在焉,门户开放政策,分时系统,纠错码4. 敌我矛盾5. 男女老少;兄弟姐妹(cf. 男女孩);亲爱的父母亲6. 钢铁工业7. 迟早;手疾眼快/眼疾手快(《现代汉语词典》2002: 1768)8. 救死扶伤;死活/生死;浮沉/沉浮(《现代汉语词典》2002: 598/236)9. 水土混合物10. 我、你和他;我、莉萨和琳达/莉萨、琳达和我;我和我妻子(丈夫)/我妻子(丈夫)和我11. 贫富12. 衣、食、住13. 正反/正负;阴阳14. 冷热(水);软硬;新老/新旧15. 来回;往返/来回/往复/来来往往16. 三三两两17. 左右18. 得失19. 水陆;水火;水乳交融20. 田径运动21. 劳动模范The coordinating words of an English word-group or phrase are usually arranged according to their shades of meaning: “each is more impressive than the preceding” (Fowler 1965:92). Chinese word order is often the opposite. Thus a common rule for translation is:Examples:1. 无地和少地的农民peasants who had little or no land2. 丰收年多积累一点,灾荒年或半灾荒年就不积累或少积累一点。

倒装和反义疑问句的讲解

倒装和反义疑问句的讲解

Up _______D_____. A. his ball went C. did he go
B. went it D. he came
4. 在不带if的虚拟条件状语从句,谓语动词是 be的句子里。如:
Were I in your position, I would ask him about the matter.
注意:如果主语是人称代词,主语和谓语动词的位 置则不变,只将副词放在句首。如: Out he rushed. 他冲了出去。
Round and round ___A____________.
A. flew the plane
B. the plane flew
C. did the plane fly D. was the plane flying
2.当句首状语为否定词或带有否定意义的词语时,一 般引起局部倒装。常见的词和短语有:hardly, little, never, not until, rarely, seldom, nowhere, in no way, at no time, in no case, by no means, hardly (scarcely/barely)…when…, no sooner… than…等。例 如:
3. 为了使描述生动形象,增强语言的印象效果,可 将某些表示方向、方位的副词如down, up, out, in, off, away等置于句首,用全倒装。例如: a. Away flew the pigeons. 鸽子飞了。 b. Bang went the firecracker. c. The door burst open and in rushed the crowd. d. Down came the hammer and out flew the sparks

倒装(Inversion)

倒装(Inversion)

(4) Neither…, nor…表示“…不…,…也 不…”
Neither do I know it, nor do I care about it.
Neither is he foolish, nor is he lazy. (由于neither和nor都是否定词,所以前后 均需倒装)
(5) Not only…, but also…表示“不仅… 而且…” Not only will help be given to people to find jobs, but also medical treatment will be provided for people who need it. Not only did he hear it, but he saw it as well.
B (3) Only _____can answer the question.
A. can he
B. he can
only修饰主语时,句子不可倒装 Only he can answer the question.
2. 否定副词 never, nor, not, little, hardly, rarely, seldom, scarcely及表示否定意义的介词短语 at no time, in no case, by no means, on no condition 等至于句首时。 Never before have I seen such a moving film. Not a single mistake did he make.
Much as he likes the bike, he does not want to buy it. 注意:如果是单数名词或形容词最高级作表语, 省去冠词。 Child as he is, he knows a lot.

Inversion 倒装句

Inversion 倒装句

Inversion 倒装句在英语中,主语和谓语的语序通常的主语在前,谓语在后。

但有时为了强调某一部分,或适应一定的语法结构的需要,而把谓语的全部或一部分提到主语的前面,这种情况叫“倒装”(Inversion)。

一、基本结构:完全倒装: 谓语+ 主语eg. In came the headmaster.部分倒装: 助动词/情态动词/be动词+主语+ V.…eg. Nothing do I care in my life.二、倒装的目的1、语法要求:疑问句,there be, 祝愿句2、修辞要求:为了强调;为描写生动;为衔接上下文;为平衡句子三、语法详解一)部分倒装1、never, often, seldom, little, nowhere, not, hardly,scarcely 等词位于句首时a. Never have I seen him before.b. Seldom do we go out.c. Little does he know what trouble he is in.Exercises:1)We are going nowhere at the weekend.2)He did not make a single mistake.3)We often warned them not to do so.2、Only + 状语,位于句首Eg. [Only in this way] can you work out the problem. 条件状语修饰整句Exercise:4)He was able to get back home only when the war was over.3、No so oner…than…;Hardly …when…; Scarcely …when…:(一……就……)位于句首Eg. Hardly had they gone out of the classroom when it began to rain.Exercises:5)He had no sooner arrived there than he fell ill.6)She had scarcely fallen asleep when a knock at the door awaked her.4、not …until… 或so ….that...位于句首Eg. Not until yesterday did I know the news.So loudly did he speak that even people in the next room could hear him.Exercises:7)I did not begin to do my homework until my mother came back.5、Not only…but also…连接两个句子时Eg. Not only was there no electricity at that time but also (there was) no water in the area. Exercises:8)He is not only an actor but also a writer.6、so/neither/nor引起的句子表示前面所说的情况也适用于另一个人Eg. He likes rice very well. So do I.I have never been abroad. Neither has he.* It was cold yesterday. So it was.Exercises:9)We saw the film last week. They saw it, too.10)I didn’t read the notice on the blackboard. He didn’t either.7、含有NO的介词短语位于句首Eg. At no time will China be the first to use nuclear weapons.By no means can teaching be separated from practice.8、省略了if 的虚拟条件句:虚拟条件句的谓语动词如果是were, had, should 时,可省略if, 但其谓语须倒装。

倒装(Inversion)

倒装(Inversion)

Hardly could he finish his test paper when the school bell rang .(由于语法要求的原因,本句写成了部分倒装的句子。它的自然语序应该是:When the bell rang, he could hardly finish his test paper.)他还未做完试卷,下课铃就响了。
Have you ever seen such a naughty kid like him !
你见过那个孩子像他这么调皮!
C. 在陈述句中
陈述句在一般情况下用自然语序;但由于英语语法的某些原因,陈述句也要使用倒装语序。这些原因大致可以归纳如下:
1) 为了避免句子部分内容不必要的重复,常用"so + be动词(助动词、情态动词)+主语"或"neither / nor + be动词(助动词、情态动词)+主语"的倒装句式。其中第一个句式表示"与前面所述的肯定情况相同", 第二个句式表示"与前面所述的否定情况相同"。例如:
如:He is a boy and he likes singing. So it is with Tom.
2)具有否定意义的词或短语置于句首时(除否定词修饰主语外),句子一般要写成部分倒装句。这类词或短语常见的有:not, never, seldom, hardly, rarely, scarcely, by no means, under no circumstances, in no way, at no time, no sooner … (than), hardly … (when), not only … (but also), not until… ,等。例如:

高中英语语法专讲 特殊句式之倒装句Inversion

高中英语语法专讲    特殊句式之倒装句Inversion

高中英语语法专讲特殊句式之倒装句Inversion 英语句子通常有两种语序:一种主语在前,谓语在后,称为正常语序,另一种谓语在前,主语在后,称为倒装语序。

之所以出现倒装,一方面是因为语法结构的需要,另一方面为了强调或修饰,有时两种原因兼有之。

倒装句分为全部倒装和部分倒装。

另外,英语句子的倒装一是由于语法结构的需要而进行的倒装,二是由于修辞的需要而进行的倒装。

前一种情况称之为语法倒装 ,倒装是必须的,否则就会出现语法错误;后一种情况称之为修辞倒装 ,倒装是选择性的,倒装与否只会产生表达效果上的差异。

一、【全部倒装】把整个谓语部分放在主语之前。

注意:谓语动词的数要与后面的主语保持一致。

1、用于地点副词here, there,方位副词out, in, up, down及时间副词now, then等开头,谓语动词为be, stand, lie, come, go, fall等的句子里,以示强调。

【语法倒装】There goes the bell. Look! Here comes the bus.这种倒装要求:主语必须是名词。

而当主语是代词时,主语和谓语语序不变。

Here it is. Here you are. Away he went. Here we go.注意:这类倒装句式一般只用一般现在时和一般过去时时态。

Here comes Miss Young. Out rushed the boys.[小练]汉翻英1)紧接着了三天大雨。

Then followed three days of heavy rain.2)我们期盼已久的时刻来了!Now comes the hour we have been looking forward to.2、当表示地点的介词短语放句首时。

注意:谓语多为be, lie, sit, stand, come, walk等不及物动词且这类倒装句式一般只用一般现在时和一般过去时时态。

inversion词典解释

inversion词典解释

inversion词典解释
根据英语词典的解释,inversion可以指以下几个含义:
1. (语法)倒装:在语法中,inversion指的是改变句子中词或短语的次序,以更强调某个信息或实现更艺术的表达方式。

常见的倒装形式包括主谓倒装、完全倒装和否定词倒装。

2. (音乐)转位:在音乐中,inversion指的是将和弦的音符改变顺序,使原本的根音成为较低音声部的一个音符,即将音符上移或下移一个八度。

3. (气象学)逆温层:在气象学中,inversion指的是大气层中温度随高度变化的模式,通常是指逆温层,即在一定高度上空温度增加而不是减少。

4. (地质学)逆转:在地质学中,inversion指的是地壳中断层运动的特殊类型,即一块地壳块的上下方向发生逆转。

总之,inversion可以指语法上的倒装、音乐中音符的转位、气象学中的逆温层,以及地质学中的逆转。

具体指代的意义需要根据上下文来确定。

数学术语inversion

数学术语inversion

数学术语inversion
"Inversion"在数学上指的是求解一个方程或等式的反过程。

具体来说,如果有一个函数f(x),那么求解f(x)的反函数的过程就称为求解inversion。

在某些情况下,这个反函数也被称为"逆函数"。

在数学分析、微积分等领域,求解inversion的过程有很多重要应用,例如求解微分方程、积分方程等。

此外,inversion也是线性代数中矩阵运算的一种重要概念,如求解矩阵的逆矩阵。

在实际问题中,inversion也有着广泛的应用,如在物理、工程、经济等领域解决各种实际问题。

总的来说,"inversion"是数学中一个重要的概念,在解决各种数学问题中发挥着重要作用。

强逆温的概念

强逆温的概念

强逆温的概念强逆温(inversion)是指大气中温度随高度变化的一个特殊情况,即在相邻两层大气中,较高层的温度反而比较低。

一般情况下,随着海拔的上升,温度会逐渐下降,这是符合大气垂直递减率的规律。

然而,在强逆温的情况下,温度却呈现出与一般规律相反的变化趋势。

强逆温通常出现在地表近地层上空,距离地表高度约在50米至200米的范围内。

这一现象在天气学、气象预报等领域中具有重要意义,对大气运动、能量交换和化学反应等过程都会产生显著影响。

强逆温的形成原因可以从挑战大气层温度垂直递减率的角度进行分析。

大气温度垂直递减率是指单位高度上温度的变化率,一般情况下为负值。

当土地受到阳光辐射而升温时,地表的空气也会升温,并向上升腾。

然而,在相对稳定的天气条件下,升腾过程中的空气受到较冷的空气层的抑制,无法进一步上升。

这样一来,高空处于较冷的状态,形成了强逆温。

强逆温通常在晴朗无风的天气条件下出现,这是因为这种天气条件下各种能量交换过程都非常弱。

而在夜间,由于辐射冷却作用,地表降温更快,从而更有利于形成强逆温。

此外,地形也对强逆温的形成和维持起着一定的影响。

陡峭的山脉、山谷或盆地地区更容易形成较强的逆温现象。

强逆温对天气和气象预报都有一定影响。

首先,强逆温可以限制大气中水汽的上升,导致云层的产生和发展受到抑制。

这就意味着在强逆温的情况下,天空通常是晴朗的,云的覆盖比较少。

此外,强逆温还影响大气中的风向和风速分布,使得低空气流的扩散能力降低,导致污染物的积聚和传播受阻。

强逆温还对逆温层下的大气污染物的积聚和扩散产生重要影响。

在逆温层下,由于空气很少上升,污染物就会在较低的层次中积聚。

这一现象在城市中尤为明显,形成了所谓的“城市烟囱”效应。

在逆温层以下的大气层内,空气能流动的空间有限,对污染物的扩散能力也很弱,导致污染物浓度持续积累,进而对人们的健康和环境造成不良影响。

总之,强逆温是大气中温度垂直分布的一种特殊现象,与一般递减率规律相反。

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Inversion主语和谓语是句子中最主要的成分,它们的语序有两种:Natural Order :S+VInverted Order :V+S:Full InversionPartial Inversion完全倒装(Full Inversion):又称"全部倒装",是指将句子中的谓语动词全部置于主语之前。

此结构通常只用与一般现在时和一般过去时。

部分倒装(Partial Inversion):指将谓语的一部分如助动词或情态动词倒装至主语之前,而谓语动词无变化。

如果句中的谓语没有助动词或情态动词,则需添加助动词do, does或did,并将其置于主语之前。

英语句子的倒装一是由于语法结构的需要而进行的倒装,二是由于修辞的需要而进行的倒装。

前一种情况,倒装是必须的,否则就会出现语法错误;后一种情况,倒装是选择性的,倒装与否只会产生表达效果上的差异。

Ⅰ.Full Inversion1. here, there, now, then, thus等副词置于句首, 谓语动词常用be, come, go, lie, run。

There goes the bell.Then came the chairman.Here is your letter.2. 表示运动方向的副词或地点状语置于句首,谓语表示运动的动词。

Out rushed a missile from under the bomber.Ahead sat an old woman.注意:上述全部倒装的句型结构的主语必须是名词,如果主语是人称代词则不能完全倒装。

Here he comes.Away they went.3. 状语或表语位于句首时的倒装为了保持句子平衡或使上下文衔接紧密,有时可将状语或表语置于句首,句中主语和谓语完全倒装:Among these people was his friend Jim.他的朋友吉姆就在这些人当中。

By the window sat a young man with a magazine in his hand.窗户边坐着一个年轻人,手里拿着一本杂志。

注意:在表语置于句首的这类倒装结构中,要注意其中的谓语应与其后的主语保持一致,而不是与位于句首的表语保持一致。

比较:In the box was a cat.箱子里是一只猫。

In the box were some cats.4. 分词和不定式置于句首的倒装有时为了强调,可将谓语部分的现在分词、过去分词或不定式置于句首,从而构成倒装:Buried in the sands was an ancient village.一个古老的村庄被埋在这沙土之中。

Standing beside the table was his wife.站在桌旁的是他的妻子。

To be carefully considered are the following questions.下列问题要仔细考虑。

ⅡPartial Inversion1.疑问句中,一般须部分倒装:How long have you been here? 你来这儿多长时间了?What do you think about the movie? 你认为这场电影怎么样?Why doesn’t he come here? 他为什么没来这儿?注意:当对句子的主语提问时,一般不用倒装语序。

Who did it just now? 刚才谁干的?What happened last night? 昨天晚上发生了什么事?2.否定词no, none, neither, nor, nobody, nothing, never,或半否定词hardly, seldom, scarcely, barely, little, few,否定词的短语not until, by no means, not only…but also…, in no way, neither …nor…, in no time, no sooner…than…, hardly…when…,及频度状语副词every day, every other day, many a time, often等位于句首时,一般须部分倒装。

如:Neither do I know him. 我也不认识他。

No word did he say before he left.他一句话没说就走了。

Little did I know about it. 我对它了解得不多。

Not only did he come, but also he brought us good news.他不但来了,而且给我们带来了好消息。

Often did he come here with a good smile on his face.他来这里时,脸上挂着笑容。

3. Only + 状语,置于句首时,一般须用部分倒装。

如:Only when I got there did I know the truth. 我只有到那里时才知道事情的真相。

Only in the morning can you meet him. 你只有在早晨见到他。

注意:(1) Only + 状语不在句首时,不可倒装,如:I wrote to him only yesterday. 我就在昨天给它取了封信。

(2) Only + 名词做主语时,不可倒装。

如:Only Li Lei can answer this question. 只有李蕾能回答这个问题。

4. as / though引导让步状语从句时,一般须用部分倒装。

Old as / though he is, he works like a young man. 尽管他很老了,但他工作起来却像个年轻人。

Hard as / though he was working, he didn’t pass the exam. 虽然他一直在努力学习,但他还是没有通过那次考试。

Try again as / though he will, he can’t succeed. 尽管他还会再试一试,但是它不会成功。

as / though引起的倒装分三种情况:表语、动词原形及状语的倒装。

(1)表语的倒装。

一般直接将表语提前到句首,若表语是带不定冠词a / an的单数可数名词,倒装后,不定冠词a / an须被省略。

Fine as / though he looks, he is ill with some serious diseases.Child as / though he is, he knows much about the society.(2) 原形动词的倒装。

A. 动词前面带有情态动词may, might, will, would, can, could等时,只将行为动词提到句首,而这些情态动词保留在原处。

B. 若动词前面没有情态动词时,应在动词原来的位置加上助动词do的适当形式。

C. 用于这一句型的动词一般是不及物动词,而不能是系动词或及物动词。

Swim as / though he can, he can’t swim so far.尽管他会游泳,但是他游不得那么远。

Run as / though he did, he didn’t run fast enough to catch the bus.虽然他跑,但是他跑得不够快而没有赶上汽车。

(3) 状语倒装。

In the classroom as / though he stays, he doesn’t read his texts. 尽管他呆在教室里,但他不读书。

Carefully as / though he worked, he made some mistakes. 尽管他工作很细心,但还是除了一些差错。

5. may用来表示祝愿时,一般用部分倒装。

如:May you have a good journey. 祝你旅途愉快。

May you succeed. 祝你成功。

6.当虚拟条件句的谓语含有were, had, should时,可将if省略,而将were, had, should 提到句首,形成部分倒装。

Were he here, we would have no difficulty with it.要是他在这儿的话,我们就不会有难处了。

Had you worked hard, you would have finished it early.要是你工作努力的话,你将早就完成了。

7.当so 用来连接不同的人或物具有相同的情况时,可用部分倒装。

—Tom can speak Chinese. 汤姆会讲汉语。

—So can Mary. 玛丽也会讲汉语。

—Mr. Li has gone to America. 李先生去美国了。

—So has Mrs. Li. 李夫人也去美国了。

但是,若是对同一个人或事的情况表示肯定而重复时,不能倒装。

如:—Li Lei is good at his lessons. 李蕾的功课学得好。

—So he is. 他的确学得好。

—Wei Fang went to the cinema last night. 魏方昨晚去看过电影。

—So she did. 她的确去看过。

8.结构so…that…/ such…that…引导状语从句,当so或such提到句首时,主句须用倒装语序。

So interesting is that story that everyone wants to read it.那个故事那么有趣,大家都想看。

So good a girl is she that we all like her.她是一个如此好的女孩,我们大家都喜欢她。

Such a good girl is she that we all like her. 她是一个如此好的女孩,我们大家都喜欢她。

9.感叹句中的倒装。

如:Isn’t it beautiful! 难道还不漂亮!Aren’t you content with it! 难道还不知足!Exercises1. _____can you expect to get a pay rise.A. With hard workB. Although work hardC. Only with hard workD. Now that he works hard2. ____, mother will wait for him to have dinner together.A. However late is heB. However he is lateC. However is he lateD. However late he is3. Not until all the fish died in the river, _____ how serious the pollution was.A. did the villagers realizeB. the villagers realizedC. the villagers did realizeD. didn’t the villagers realize5.—Do you know Jim quarrel with his brother?—I don’t know, _______.A. nor don’t I careB. nor do I careC. I don’t care neitherD. I don’t care also10.—I don’t think I can walk any further.—_____, Let’s stop here for a rest.A. Neither can IB. Neither do IC. I didn’t think soD. I think so12. Hardly ____ when it began to rain.A. had he arrivedB. arrived heC. he had arrivedD. did he arrive13. Jack is a student and studies at the No. 2 Middle School. _____.A. It was the same with MikeB. So it is with MikeC. So is MikeD. So does Mike14. ______, I would have given you his address.A. If you asked meB. You had asked meC. Should you have asked meD. Had you asked me21. _____the plane.A. Flew downB. Down flewC. Down was flyingD. Down fly23. ______ I had time, I would have run round that lake again.A. IfB. UnlessC. HadD. When24. Not only ______ a promise ,but he also kept it.A. had he madeB. he had madeC. did he makeD. he makes26. There ____ .A. come theyB. they comeC. they are comeD. they will come。

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