How is the language family divided? For example, Sino Tibetan language family, Indo European language family and so on, which language family do the world's major languages belong to?

The genealogical classification of language is also called "generative classification", which is one of the language classifications. It is divided into several language families according to the kinship between languages. Under the language family, it is divided into several language families according to the distance of kinship. Under the language family, it is divided into several language branches, and under the language branches are languages. Professor Xu Tongqiang and Hu Jicheng of Peking University classify the world languages into 13 language families and 45 language families
This kind of classification is formed by summing up the experience of Soviet Union's language classification from the aspects of national origin, language development and other factors,
The classification of language families is as follows:
Sino Tibetan language family
Indo European languages
Caucasian family
Urals
Altaic language family
Dravidian languages
Austro-Asiatic language family
Austronesian language family
Hamito-Semitic family of languages
Niger Kordofan language family
Nilo-Saharan Family
Khoisan family
North American Indian languages

Find the language characteristics and knowledge of various expressions in Chinese articles

There are five ways of expression: narration, description, discussion, lyricism and explanation. The difference between them is very clear. If you want to ask about the expression method, it contains more knowledge

The average of the seven natural numbers is 58. It is known that the average of the first three numbers is 63, and the average of the last five numbers is 56. What is the third number?

The average of the first three numbers is 63, and the average of the last five numbers is 56
63 * 3 + 56 * 5 = the sum of seven numbers plus the third number = 58 * 7 + the third number,
The third number = 63

Jiang's misfortune in Chinese
How much is it?

When asked, he said, "my grandfather died, and my father died, and now I have 12 years to be my heir. How many dead people are there?" he said, "if it's poison? If it's poison? If it's service, if it's Fu?" Wang Ran burst into tears and said, "you'll live in sorrow

Grade 5 Volume 2 math homework page 24 answers

1 Baidu map

1.3 △ x = 0.52 to solve the equation

1.3÷x=0.52
x=1.3/0.52
x=2.5

Two simple calculation methods of 9.9 * 102~

9.9*102
=(10-0.1)*102
=10*102-0.1*102
=1020-10.2
=1009.8
9.9*102
=9.9*(100+2)
=9.9*100+9.9*2
=99+10.8
=1009.8
If you have any questions, please ask. Hope to adopt!

Seek the master to solve the mathematics super difficult problem of grade three in junior high school
Cut a 20cm long iron wire into two sections, and make a square with the length of each section of iron wire as the perimeter. What is the minimum value of the sum of the areas of the two squares [the answer is 12.5] I don't know why and how to get it. I hope Baidu knows the ideas and methods of this problem

Function to find the most value problem
Let the perimeter of a square be X
Then the sum of the areas of the two squares is the square of (1 / 4x) + (20-1 / 4x)
Use the quadratic equation of junior high school to get the maximum value
The calculated x = 10, and the maximum area sum is 12.5
There are still questions to ask~

The original price of a brand TV set was 2000 yuan, but now the price has increased by 500 yuan, and the sales volume has dropped sharply. In order to promote sales, we decided to pay 8% of the selling price

It's the problem again. Haven't you finished yet?
（2000+500）×85%=2125

The equation of a line parallel to the line y = - 2x + 3 and intersecting with the line y = 3x + 4 on the x-axis is ()
A. y=-2x+4B. y=12x+4C. y=-2x-83D. y=12x-83

∵ if the slope of the straight line y = - 2x + 3 is - 2, then the slope of the straight line k = - 2. In the linear equation y = 3x + 4, let y = 0, then x = - 43, that is, the coordinate of the intersection of the straight line and the X axis is (- 43, 0). Therefore, the linear equation y = - 2 (x + 43), that is, y = - 2x-83

How is the language family divided? For example, Sino Tibetan language family, Indo European language family and so on, which language family do the world's major languages belong to?