If you sign at the beginning of a letter or when you sign it, you should add a study; In front of it; Write down the number of each day, followed by a dot. Use German words to represent the month and numbers to represent the year.

For example: 20 17 12.20 Den 20. December 20 17

German belongs to the Indo-European-Germanic-West Germanic branch. It is the only official language in Germany, Austria and Liechtenstein, and it is also one of the official languages in Switzerland, Belgium and Luxembourg, including dozens of dialects in the two branches of Highland German and Low German.

The formation of German common standard language can be traced back to Martin Luther's Bible translation. Originally used in Germany, Austria, Hungary, most parts of Switzerland, most parts of Poland, Liechtenstein, Luxembourg, northeastern France, northeastern Italy and eastern Belgium.

In addition, there are a large number of German learners in the former colonies of Germany, such as Namibia, Botswana, Cameroon, Ghana, Togo and Benin, and there are still a few German-speaking minorities in some countries in Eastern Europe.

According to the latest data from the European Language Management Center in September of 20 15, there are nearly1770,000 German learners in the world, including 95 million native speakers, 20,000 second language users and 70 million foreign language learners, making it one of the most frequently learned foreign languages in the world.