2. What is metaphor?
What is comparison? What is comparison?
Meaning of (1) ratio: The division of two numbers is also called the ratio of two numbers.
(2) Part name: ":"is a comparison symbol, which is pronounced as "comparison". The number before the comparison symbol is called the first item of comparison, and the number after the comparison symbol is called the last item of comparison.
The quotient obtained by dividing the former term by the latter term is called the ratio.
Such as: 20 (front): (comparison number) 50 (latter) =20÷50=2/5 (ratio)
(3) Comparison with division and fraction
1. Compared with division, the former term of ratio is equivalent to dividend, the symbol of ratio is equivalent to ÷ (division symbol), the latter term is equivalent to divisor, and the ratio is equivalent to quotient.
2. Compared with fraction, the former term of ratio is equivalent to numerator, the ratio sign is equivalent to/(fractional line), the latter term is equivalent to denominator, and the ratio is equivalent to the value of fraction.
(4) Basic properties: The first term and the second term of the ratio are multiplied or divided by the same number (except 0) at the same time, and the ratio remains unchanged.
Answer: 20:50 is the ratio.
Hope to adopt, thank you! !
What is comparison? What is bile? What is the connection and difference between ratio and proportion?
Ratio and proportion have always been one of the main confusing problems in learning mathematics. In fact, the problems between them can be summed up in one sentence:
Ratio, which is equivalent to the formula to the left of the equal sign in the formula, is one of the formulas (for example, A: B);
Proportion is formed by connecting at least two formulas called ratio with equal sign, and the ratio of these two ratios is the same (for example, a:b=c:d).
So, the relationship between ratio and proportion can be said to be:
Proportion is a part of proportion; The ratio consists of at least two ratios with equal ratios.
The meaning of ratio is the division of two numbers, which is also called the ratio of two numbers, while the meaning of ratio is that the formula that indicates that two ratios are equal is called ratio. The ratio is the division of two numbers, and there are two items; Proportion is an equation, which means that two proportions are equal and there are four terms. So the meanings of ratio and proportion are different. Moreover, the comparison symbol does not have the meaning of brackets, while in another form, the score has the meaning of brackets!
What's the ratio?
The division of two similar quantities A and B can also be called ratio. Divider a is the divisor b of the previous term and the latter term of the ratio. The symbol of division is equivalent to the quotient ratio of comparison symbol and division. To compare two nonzero numbers, it can be expressed as a fraction. The denominator is the term after the ratio, and the former is the numerator. Divided by the quotient component value, the fractional value is also a ratio. Find the ratio of two quantities of the same kind, and don't forget to unify the units. Ratio It is a number, and the result cannot be a point ratio.
(1) [specific value; Ratio]: the value obtained by comparing two numbers.
(2)[ Ratio]: the quotient obtained by dividing one quantity by another. Also known as ratio
(3) In epidemiology, odds refer to the ratio of the possibility of something happening to the possibility of not happening.
The division of two similar quantities A and B can be called ratio. ※.
Divider a is the divisor b of the previous term and the latter term of the ratio.
The symbol of division is equivalent to the quotient ratio of comparison symbol and division.
To compare two nonzero numbers, it can be expressed as a fraction.
The denominator is the term after the ratio, and the former is the numerator.
Divided by the quotient component value, the fractional value is also a ratio.
Find the ratio of two quantities of the same kind, and don't forget to unify the units.
Ratio It is a number, and the result cannot be a point ratio.
For example:
The ratio of 8 to 2 is 4, which is 4: 1.
What is comparison? What is proportion? What is the connection and difference between ratio and proportion?
Proportion is the proportion of the number of parts in the group to the total number, which is used to reflect the composition or structure of the group.
Proportion can be divided into two types: scale and proportion. Two expressions with equal ratios are called proportions. Judging whether two ratios can form a proportion depends on whether their ratios are equal. The four numbers that make up a proportion are called proportional terms. The two terms at both ends are called external terms of proportion, and the two terms in the middle are called internal terms of proportion. In proportion, the product of two external terms is equal to the product of two internal terms, which is the basic property of proportion. One of the unknowns in finding the proportion is called the solution ratio.
explain
(1) The formula for expressing two equal ratios is called ratio, such as 3:4=9: 12, 7:9=2 1:27.
There are four items in the proportion, namely two internal items and two external items; In 7:9=2 1:27, 7 and 27 are called external proportional terms, and 9 and 2 1 are called internal proportional terms.
For example, both teachers and students have met the requirements.
For example, among the goods sold, domestic products account for a relatively large proportion.
(4) After the proportion is written as a fraction, then the denominator on the left and the numerator on the right are internal terms; The numerator on the left and the denominator on the right are external terms.
⑤ Basic property of proportion: In a proportion, the product of two external terms is equal to the product of two internal terms.
What is the basic nature of ratio?
The basic property of the ratio is that the first and last items of the ratio are multiplied or divided by the same number (except 0) at the same time, and the ratio is equal.
For example, the ratio of1:3 =1÷ 3 =1/3; 1/3 is also a way of writing, which is read as one-to-three comparison and one-third score.
Two ratios with equal ratios can form a ratio, which is connected by an = sign. When the denominator in the ratio is 1, it can be written as an integer.
For example: 50:25=2 or 2/ 1 or 2.
Extended data
Simplify the integer ratio and divide it by the greatest common factor of the last item in the previous paragraph.
Simplify the fraction ratio, multiply it by the least common multiple of the denominator, convert it into an integer ratio, and then simplify the ratio, or multiply it by the reciprocal of the term and write it in the form of a ratio.
Simplify the decimal scale, multiply it by the same multiple, convert it into an integer scale, and then simplify the scale.
Compared with division and fraction, the former term of ratio is equivalent to divisor and numerator, the latter term is equivalent to divisor and denominator, the ratio is equivalent to quotient and fraction, and the sign of ratio is equivalent to divisor and fraction.
The ratio is equivalent to quotient and fractional value. Because the divisor and denominator cannot be "0", the later term of the ratio cannot be "0". If the relationship among ratio, division and fraction is expressed by letters, it can be expressed as a:b=a÷b=a/b(b≠0).
Sogou Encyclopedia -Bi (Mathematical Meaning)
What is metaphor? What does metaphor mean?
metaphor
Metaphor is "analogy", comparing one thing with another according to the similarity between things, making abstract things concrete and abstruse truths simple.
By analogy, it can make things vivid and deepen readers' impression; Used to explain the truth, it can make the truth easy to understand and easy to understand.
The basic structure of metaphor is divided into three parts: ontology (figurative object), figurative words (words expressing figurative relations) and figurative body (figurative object).
Metaphor is generally divided into simile, metaphor and metonymy.
simile
Ontology, metaphor and vehicle appear at the same time.
Common metaphors are: like, like, like, like, like, like, like, like, like and so on.
Ex.: He is motionless, just like a stone statue (figuratively).
The leaf (ontology) is very high in the water, like a graceful skirt (metaphor). (Zhu Ziqing's Moonlight on the Lotus Pond)
Metaphor [metaphor]
Ontology and vehicle appear at the same time, but metaphors such as "image" are replaced by copula such as "yes", "success", "becoming" and "becoming".
Example: Mom! You (ontology) are lotus leaves (metaphor), and I (ontology) are red-violet (metaphor).
More often, the dark clouds are four in one, and the mountain (ontology) becomes an ink landscape (metaphor). (Li Jianwu, "Climbing Mount Tai in the Rain")
metaphor
Ontology and metaphor did not appear, so ontology was directly replaced by metaphor.
Example: The gray veil of Zhang Zhu in the sky (figuratively). "Grey curtains" is a metaphor. Ontology is a "dark cloud", but it doesn't write. )
I seem to have a cold shiver; I know there is a thick barrier of sadness between us, and I can't speak anymore. (Lu Xun's hometown)
Aurora sometimes appears for a short time, just like the fireworks of the festival flashed in the air and disappeared without a trace; Sometimes it can shine in the sky for hours; Sometimes like a ribbon, sometimes like a flame, sometimes like a colorful giant screen; Some colors are changeable and endless; Some are just silvery white, like cotton wool and white clouds, solidified; Some of them are unusually bright, covering up the brilliance of the stars and the moon; Some are very light, like a bunch of moss; Some structures are simple, like a curved arc, showing a light green and reddish tone; Some are like colored silks or ribbons thrown into the sky, flying up and down; Some are as soft as scarves, fluttering in the wind, showing purple and crimson colors; Sometimes the aurora appears on the horizon, just like the morning light; Sometimes it is as bright as camellia and red; Sometimes the aurora gathers together, just like a curtain; Sometimes it shoots many beams, just like a proud peacock, flying with butterfly wings.
Metaphor is similar to other things, so use that other thing to compare the ideological object; That is to say, compare one thing or situation with another. The rhetorical device of this kind of metaphor is called metaphor, also called metaphor. By using it, we can turn unfamiliar things into familiar things, make abstruse truths simple, and concretize and visualize abstract things.
Metaphor generally includes three parts: ontology (comparative things or situations); Metaphor (something or situation to be compared); Metaphorical words (words expressing metaphorical relations). According to the similarities and differences of the three parts, there are three basic types of metaphor: simile, metaphor and metonymy. In addition to these three basic types, according to the combination of three parts of metaphor, its variation forms are: metaphor, duality, irony, abbreviation, extension, metaphor, metonymy, mutual metaphor, inflectional metaphor and so on.
The function of metaphor:
(1) Using metaphors to describe and render certain features of things can make things vivid and tangible, arouse readers' association and imagination, give people a vivid and profound impression, and make the language colorful and full of strong appeal.
(2) Metaphorical truth: use simple and clear things to describe profound truth, turn abstract into concrete, and simplify complex to help people understand deeply. And make the language vivid and rich in literary talent.
Metaphor must meet two conditions:
(1) Ontology and vehicle must be two different things.
(2) Ontology and vehicle must have similarities.
Three problems that should be paid attention to when using metaphor;
(1) Vehicles should be common and easy to understand. If the vehicle is not familiar to readers, the purpose of metaphor will not be achieved.
(2) The metaphor should be appropriate. We must carefully analyze and summarize the similarities between vehicle and ontology. If we ignore this similarity, it is easy to use metaphor inappropriately.
(3) Metaphor should pay attention to thoughts and feelings. I feel that the color of * * * is not suitable, and the language expression loses its luster.
What is metaphor?
First, metaphorical meaning
Metaphor is a common rhetorical device. It is a figure of speech to describe or explain things A with things B similar to things A, also known as "metaphor" and "analogy", which was called "bi" or "bi" in ancient China.
2. Metaphor can be divided into simile (direct metaphor), metaphor (metaphor), analogy, metonymy, duality, metaphor, simple metaphor, detailed metaphor, quotation and empty metaphor according to the way of description or explanation.
Third, quotation and explanation.
A figure of speech in rhetoric. That is, comparing thing A with thing B, in form, it has three components: ontology, vehicle and figurative words. Metaphor can be divided into simile, metaphor and metonymy because of its similarities and differences.
Metaphor is to compare one thing with another according to the similarity between things (the thought object is similar to other things), to concretize the abstract things and to simplify the profound truth (to compare the thought object with other things, that is, to compare one thing or situation with another).
Fourth, the source
The name of metaphor was first seen in The Book of Songs, Elegance and Pity. Among them, there is a poem "It's not far to draw inferences from one instance, and it's not special to be good at heaven". During the Spring and Autumn Period and the Warring States Period, a hundred schools of thought began to study metaphor. In the Liang Dynasty, Liu Xie's Wen Xin Diao Long had a comprehensive and incisive discussion on metaphor. In Ming and Qing Dynasties, Yu Lin by Xu Yuantai in Ming Dynasty and Bian Yu by Lu Peifen in Qing Dynasty appeared, which further developed metaphor research.