1? one, 2? two, 3? three, 4? four, 5? five, 6? six, 7? seven, 8? eight, 9? nine

10 ? ten, 11 ? eleven, 12 ? twelve, 13 ? thirteen, 14 ? fourteen, 15 ? fifteen, 16 ? sixteen

17 ? seventeen, 18 ? eighteen, 19 ? nineteen, 20 ? twenty, 21 ? twenty-one

22 twenty-two, 23 twenty-three, 24 twenty-four, 25 twenty-five, 26 twenty-six

27 twenty-seven, 28 twenty- eight, 29 twenty-nine, 30 thirty

English (English) is a language of the Indo-European-Germanic language family. It is composed of 26 letters. The English letters originate from the Latin alphabet, and the Latin alphabet originates from The Greek alphabet evolved from the Phoenician alphabet.

English is an internationally designated official language (as a mother tongue) and the most widespread first language in the world. English contains about 490,000 words, plus about 300,000 technical terms, making it the language with the largest vocabulary. It is also the official language of the European Union, many international organizations and Commonwealth countries. It has the third largest number of native speakers in the world, second only to Chinese and Spanish.

Reference materials:

English - Baidu Encyclopedia