Inversion or inversions may refer to:
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English Grammar - Inversion: "Had I known...", "Should you need..."
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Subject-Verb Inversions - English Grammar Lesson
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Inversion - Smrt Live Class with Shaun #18
Transcription
Hi. Welcome again to www.engvid.com. I'm Adam. Today's lesson is about inversion. Now, what does "inversion" mean? "Inversion" is when you change the order of something. Right? So we're looking at grammar. Usually, you know in a sentence a subject comes first and then a verb. Today we're going to look at situations where that is reversed. Now, of course, I'm sure that you know that in questions: "Are you sure?" the verb comes before the subject in all questions. That's what makes a question structure a question structure. However, there are other situations where we have this inversion, but we're looking at a sentence; we're not looking at a question. Now, the thing to understand about inversions is that they are very particular. There are only a few expressions that you're going to use inversion with. You can't put them in just about... In just any sentence that you want. The examples that I've written on the board are the ones that you might read or that you might want to write. There are other situations that use this, but unless you're writing poetry or artistic, creative novels - you don't need them and you don't really need to worry about them either. They're very rare. It's very rare you'll see them. It's very, very formal language style. And you'll recognize them, hopefully, when you do see them. So let's start here. When we have "not only". Generally speaking, when we have a sentence that begins with a negative, we're going to have inversion, but especially when you have "not only", you're going to have inversion. Okay? "Not only did he", so there's your verb, there's your subject, there's your verb. Okay? We have the helping verb, the auxiliary verb to start. "Not only did he win", and then we have the "but", "also" to go with "not only". This is like an expression that's fixed; you're always going to be looking at the same thing. "Not only did he win, but he also broke the record." Whatever. "Not only", inversion, "but also". "Under no circumstances", this is another expression that you'll see regularly. And again, we're looking at the negative construction which is why we're looking at the inversion. "Under no circumstances should you call her/call him." Okay? Whatever you do, don't call. "Under no circumstances". "Circumstances", basically situation. In no situation should you call. In no situation, same idea. Okay? Another negative: "nor". What is "nor"? Is the negative of "or". Okay? "Or", "nor". Again, many people don't use this word anymore; it's a little bit old-fashioned, a little bit high formality level. But... "The mayor of Toronto refused to resign, nor do we expect him to." Okay? So after "nor", we still have the inversion. Verb, subject, verb. Verb, subject. Okay? I'm not sure if you know the mayor of Toronto, he's very famous now. We're not very proud, but that's a whole other story. Next, so these are the three negatives. These two are also very similar. Again, very formal style, but you might see it, you might want to use it in your essays or whatever. "Should you need any help, don't hesitate to call." What does this mean? "Should you need", if you need. "Should" is just a more formal way to say: "if". "If you need any help, don't hesitate to call.", "Should you need any help, don't hesitate to call." Now, this is a verb, subject, verb. If we use: "if", then there's no issue. Then you have "if" which is a conjunction, adverb, clause, conjunction, subject, verb. "Should" makes it verb, subject, verb. "Had" is the same thing with the "if", but a different structure of the conditional, a different "if" structure. "Had I known you were coming, I would have changed." "If I had known", "If I had known you were coming", "Had I known", it's basically you're making the sentence a little bit shorter, a little more formal. You're starting with a verb, a subject, and another verb. Okay? Past perfect, of course. So these are the conditionals, these are the no's. Now, we have the comparatives, when you're comparing something. When you're comparing an action, so you're using the clause marker: "as", not the preposition: "like". So: "John speaks Chinese, as does Lucy." Okay? "Lucy" is actually the subject, here's the verb, here's a subject. Now, I could put a period and put a new sentence. "So does Lucy." Same idea. "Lucy does as well." If I want the subject, verb order. But when you start with "as", you're going to invert the order. This is a clause marker, adverb clause marker to compare. "More important than love is money." Now, you're thinking: "Well, isn't love the subject?" No, "money" is the subject. "Money is more important than love." But again, style, you want to have it a little bit different... Different structure to impress the reader, to make it a little bit different - you start with the comparative, and then the verb, and then the subject. Okay. Because then "love", this is an object in this situation. Then we have a few expressions. "Here comes Jane." Now, "here" is not a subject; "here" is here. Right? It's an... It's an adverb in this situation. "Jane comes here." Sounds a little strange, doesn't it? That's why we invert everything to make it a little bit more natural. "Here comes Jane." Here comes Jane. Then we have some expressions. Now, it looks like a question but we make it look like a question to give it more emphasis, to give it more strength. "Man, is it cold out!" I'm not asking you: "Is it cold out?" No, I know it's cold out. I'm telling you it's cold out and I'm telling you very strongly. "Is it cold out.", "Man, am I hungry." It means: I am really hungry, but making it very strong; we're making a point of emphasizing which is why we invert the subject and the verb. Okay? And, of course, you have your question. "Are you sure?" "Are you happy?", "Did he come?", "Did you see that?" Whatever the situation is. So there you... You have it: inversion. It's not complicated. You have to just remember the particular structures that use inversion. When you see it, you'll understand what's going on; when you want to use it, here's your list. Pick one, write your sentence, make it work. Of course, go to www.engvid.com. We have a quiz there that you can practice these a little bit more. And we'll see you again soon.
Arts
- Inversion (artwork), a 2005 temporary sculpture in Houston, Texas
- Inversion (music), a term with various meanings in music theory and musical set theory
- Inversions (novel) by Iain M. Banks
- Inversion (video game), a 2012 third person shooter for Xbox 360, PlayStation 3, and PC
- Inversions (EP), the 2014 extended play album by American rock music ensemble The Colourist
- Inversions (album), a 2019 album by Belinda O'Hooley
- Inversion (film), a 2016 Iranian film
Linguistics and language
- Inversion (linguistics), grammatical constructions where two expressions switch their order of appearance
- Inversion (prosody), the reversal of the order of a foot's elements in poetry
- Anastrophe, a figure of speech also known as an inversion
Mathematics and logic
- Additive inverse
- Involution (mathematics), a function that is its own inverse (when applied twice, the starting value is obtained)
- Inversion (discrete mathematics), any item that is out of order in a sequence
- Inverse element
- Inversive geometry#Circle inversion, a transformation of the Euclidean plane that maps generalized circles to generalized circles
- Inversion in a point, or point reflection, a kind of isometric (distance-preserving) transformation in a Euclidean space
- Inversion transformation, a conformal transformation (one which preserves angles of intersection)
- Method of inversion, the image of a harmonic function in a sphere (or plane); see Method of image charges
- Multiplicative inverse, the reciprocal of a number (or any other type of element for which a multiplication function is defined)
- Matrix inversion, an operation on a matrix that results in its multiplicative inverse
- Model inversion
- Set inversion
Natural sciences
Biology and medicine
- Inversion (evolutionary biology), a hypothesis about the evolution of the dorsoventral axis in animals
- Inversion (kinesiology), movement of the sole towards the median plane
- Chromosomal inversion, where a segment of a chromosome is reversed end-to-end
- Inversion therapy, the practice of hanging upside down (heart higher than head) for supposed health benefits
Geology
- Inversion (geology), the relative uplift of a previously basinal area resulting from local shortening, in structural geology
- Relief inversion, when a previous depression becomes a landform that stands out from its surroundings
- Seismic inversion, transforming seismic reflection data into a quantitative rock-property description of a geological formation
Physics and chemistry
- Island of inversion, a group of elements with abnormal nuclear shell structure
- Nitrogen inversion, a chemical process in which a trigonal nitrogen-containing structure turns inside-out
- Population inversion, in statistical mechanics, when a system exists in state with more members in an excited state than in lower-energy states
- Pyramidal inversion, a chemical process in which a trigonal structure turns inside-out
- Inverted sugar syrup, a chemical reaction converting sucrose into glucose and fructose
Other uses in the natural sciences
- Inverse problem, the process of calculating from a set of observations the causal factors that produced them
- Inversion (meteorology), air temperature increasing with height
Other uses
- Priority inversion, the condition of a low-priority task holding a shared resource that a high-priority task needs
- Inversion in postcolonial theory, a discursive strategy/gesture in cultural and subaltern studies
- Roller coaster inversion, which turns riders upside-down
- Tax inversion, a form of tax avoidance by moving corporate ownership to low-tax nations
See also
- Inverse (disambiguation)
- Inverter (disambiguation)
- Sexual inversion (disambiguation)
- Involution (disambiguation)
- Eversion (disambiguation)
- Reversal (disambiguation)