One of my favorite things to explain in class is that language | Alex F (IELTS 9)

One of my favorite things to explain in class is that language doesn't stay the same over time. Often, when I watch movies from 10 or more years ago, I will hear phrases that I either haven't heard in years, or don't even know at all! In most cases, I have to watch with subtitles to guess what the words mean, too.