There are many good reasons to learn English, one of them is because it has become a global language, the lingua franca. What makes English work as a global language is not just the questionable influence of the British Empire - which has a lot to answer for - but its flexibility, something that has developed due to it’s history.
今週の #WOTW は 'whatever’ です。’Whatever’ is a pronoun (we haven’t had many of those), an adverb, and an exclamation. We also use it in one phrase. Today’s is not a very long installment, so it’ll be over before you know it.