Did you know that in total around 1.75 billion people in the world speak English to a useful level? Just under 400 million of them are native speakers (English is their first language) which means that most people speaking English speak it as a second language or as a foreign language.
Did you know that if you listen to all the conversations in English happening around the world, just 4% of those conversations involve only native speakers ? English is the language of global communication.
If you want to speak with the world, you need English, but do you need the same English as a British or a Canadian person? Here is my wonderful colleague Catherine Lejtenyi and me, talking about why you need to know about English as a Lingua Franca.