A ‣ Who speaks what where?
country | nationality | language |
Australia | Australian | English |
Brazil | Brazilian | Portuguese |
China | Chinese | Mandarin (and Cantonese) |
Egypt | Egyptian | Arabic |
France | French | French |
Germany | German | German |
Greece | Greek | Greek |
Israel | Israeli | Hebrew |
Italy | Italian | Italian |
Japan | Japanese | Japanese |
(South) Korea | Korean | Korean |
Poland | Polish | Polish |
Russia | Russian | Russian |
Saudi Arabia | Saudi Arabian | Arabic |
Spain | Spanish | Spanish |
Switzerland | Swiss | Swiss-German, French, Italian |
Thailand | Thai | Thai |
Turkey | Turkish | Turkish |
the UK (United Kingdom)* | British | English |
the USA (United States of America) | American | English |
*the UK (England, Scotland, Wales and Northern Ireland)
I come from Argentina, so I’m Argentinian and my first language is Spanish. The capital is Buenos Aires, which has a population of more than 10 million people.
Common mistakes
He’s English. (NOT He’s english.); We ate French food. (NOT We ate France food.)
I went to the USA. (NOT I went to USA.) I also visited the UK. (NOT I also visited UK.)
B ‣ Parts of the world 
The continents in the world are Europe, Africa, Asia, North America, South America, Australia [Australia and New Zealand] and Antarctica.
We also use these terms for different parts of the world:
the Middle East (e.g. United Arab Emirates, Saudi Arabia), the Far East (e.g. Thailand, Japan), the Caribbean (e.g. Jamaica, Barbados), Scandinavia (Sweden, Norway, Denmark, Finland).
C ‣ The people 
When we are talking about people from a particular country, we add ‘s’ to nationalities ending in ‘-i’ or ‘-(i)an’, but we need the definite article (the) for most others.
Brazilians/Russians are ...
Thais/Israelis are ...
The British / The French are ...
The Swiss / The Japanese are ...
With both groups we can also use the word ‘people’, e.g. Brazilian people, British people, etc.